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Percy and Annabeth were presently 22, going on 23. Four years since the end of Apollo’s quest to restore his godhood. They’d graduated college only a few weeks ago, were presently unemployed but had good prospects lined up, plenty of applications out in the world, and were approaching the JFK International Airport in Manhattan to see Sally, Paul, and Estelle, and have a mini celebration of their own after having celebrated with Annabeth’s family back in San Francisco.

Zeus had relented on the flying thing after Percy did a quest for him back in college.

On the plane, sitting next to each other, Annabeth shifted with a tight expression.

“You okay?” Percy asked.

“Gotta poop,” Annabeth casually admitted. Though they weren’t officially married, they certainly had plenty of sex, lived together in a dorm after their freshman year and they could be co-ed, and were lined up to get an apartment upon their return to New Rome. They were comfortable enough with each other to admit their bodily needs. “And I am not using the airplane toilet.”

Percy nodded understandably. “You can hold it. I have faith. You’re a big girl, after all.”

“Ha ha,” Annabeth rolled her eyes.

Another 30 minutes and the plane hit the runway as softly as a plane ever did, causing a small gasp to escape the blonde demigod. Percy looked at her, torn between concern and amusement.

“Did you just…?”

“No, but I almost did. Oh, Hades, I might have to use the toilet back there after all.”

“Can you hold it till at least we get inside the terminal? They won’t let us stand up, and when they do, they’ll be kicking us off the plane.”

“I think I can hold it,” Annabeth squirmed again.

“You look like Estelle doing the potty dance.”

“Estelle would just go in her diaper.”

“Maybe we need to get you some diapers for the flight back,” Percy said innocently. Annabeth then adopted an “that isn’t a terribly bad idea” expression, and it made Percy worried. “You aren’t actually thinking of wearing a diaper on the flight back, are you?”

“What if I was?” Annabeth asked in the same innocent tone Percy had just used. “Wouldn’t have to worry about potty breaks or holding it.”

“Yeah, but…you really want to be sitting in your poop for however long we have left in the flight?”

“Of course not. I’d have you change my diaper in the restroom back there.”

She said this as if Percy changing her diapers was a regular occurrence, and said it with such casualness that it caused Percy to pause briefly and wonder if there were some memories he didn’t have of him changing Annabeth’s diapers.

Annbeth smirked at him. “What? Wouldn’t you change my diaper if I asked?”

Percy felt hot. It wasn’t as if he hadn’t hilted his dick all the way to his balls down inside all three of her holes already, so it wasn’t the thought of seeing and touching her privates that made him blush, but the thought of actually wiping her privates, wiping globs of poop from her nethers like he’d done for Estelle plenty of times. It was a different kind of intimacy, he mentally rationalized. “Uh…I guess I would? If you were like, disabled, or super sick or something.”

“Aww, you mean to say you that if I was just like, Percy, I’m going to wear diapers now, and you’re going to change them, you wouldn’t just do that for me?”

Percy frowned. “I feel like there’s some underlying intent and meaning here. Um, do you want to try diaper stuff? I mean, I know Piper told us it was fun when she and Shel did it-”

Annabeth giggled. “Relax, Percy, I’m messing with you. Though my heart is warmed knowing that you love me enough to wipe my ass for me if I ever needed your help.”

“You’re welcome?”

PJOABDL

From the time the airplane boarded in San Francisco to when Percy and Annabeth stepped off in New York, was six hours and seventeen minutes. Haven taken the early flight, it was still early afternoon when they were traversing the terminal towards baggage claim.

“There’s the bathroom,” Percy pointed out.

“It’s okay,” Annabeth said. “It’s gone now. Just understand that I’ll be using the bathroom first when we get to your mom’s place.”

“Understandable.”

Annabeth’s claim proved to be short-lived. They reached the baggage claim, luggage not yet on the conveyer, and her need to poop came back almost with a vengeance. The urge hit her so bad that she actually grabbed onto Percy’s sleeve and leaned into him, gasping, a hand on her stomach and her knees slightly crossed.

“Oh, gods, you are not gonna make it, are you?” Percy blinked.

Annabeth hissed at him. “Just shut up and let’s hurry.”

“There’s a restroom right over there.”

“I am not using an airport restroom. No telling what kind of monsters could be in there, and I am not talking about anything from Tartarus.”

Percy’s mouth set into a thin line. Right. This was New York. No telling just who was in those restrooms these days.

So they waited. And waited. And Annabeth squirmed and danced in place, bouncing on her heels. A few people noticed, glancing at her, then glanced away, and then tried not to get caught glancing at the beautiful blonde woman who was clearly doing a child’s potty dance routine, and failing at trying to hide it.

“Annabeth, just go use the restroom,” Percy said.

“No.”

“Yes.”

“Not gonna.”

“Are you really gonna poop yourself right here?”

“No, I’m going to hold it until we get to your mom’s apartment.”

“Doesn’t look like it to me. You are not getting into my mom’s car with your pants full of poop.”

“Oh, please. It’s not like Estelle hasn’t done that plenty of times already.”

“She’s a little kid, though. You’re an adult.”

“So? Adults have accidents.”

“You are not about to use that justify pooping yourself because you don’t want to use the airport potty.”

“I’m not gonna poop myself because I’m gonna hold it.”

They were talking real low, Percy’s mouth down next to Annabeth’s ear as she leaned on him.

Bags started rising from the conveyer from below. Perhaps there was a god looking out for them, because their bags were the first to arrive. They grabbed them off the conveyer with haste, sweat now beading Annabeth’s brow, her breathing becoming labored from the effort she was putting into keeping her butthole clenched.

“It’s that really gross poop, too,” she muttered to Percy. “You know that mossy kind that all floats under the surface of the water?”

Percy shuddered. “I did not need that mental image, thanks.”

They exited the terminal to the pickup lanes, and in another stroke of good fortune, Sally was right outside the door with the Prius. She saw them coming and popped the trunk for their bags, excitedly rushing out the driver’s seat to come hug them.

“Hugs later, Mom,” Annabeth almost wheezed, her hand up to stop Sally from literally squeezing the crap out of her.

Sally’s smile fell. “What’s wrong?”

“Trying not to poop in my pants,” Annabeth admitted.

“Why didn’t you use the airplane potty?”

“Eww, no.”

“Or the airport potty?”

“Double eww.”

Sally shook her head. “You’re as bad as Estelle.”

Annabeth grinned sheepishly.

“Are you wearing-”

“No,” Annabeth said quickly, then she covered, “I mean, yes. Of course I’m wearing that perfume you sent me.”

Percy blinked. “You aren’t wearing any perfume…”

“Yes, I am. You’ve just gotten used to how it smells.”

“Uh…ok?”

One of the airport security guards shouted at them, “Hey, reunion later! These cars need to be moving!”

“Sorry!” Percy shouted back. Then, to Annabeth and Sally, “Dick.”

Bags were loaded in the trunk, but there was yet another moment of pause. In the backseat, Estelle’s booster was occupying the left side.

“Sorry!” Sally blushed. “Had to leave in a hurry, and-”

“It’s fine,” Annabeth said, plopping down in the booster seat, her hips slim enough to fit without too much squeeze.

Percy settled into the rear passenger seat to be next to Annabeth, and Sally drove off.

“Where’re Paul and Estelle?” Percy asked.

“At home. We didn’t tell Estelle you were flying in. Wanted it to be a surprise for her.”

Percy smiled. “Awesome.”

What was not awesome was New York traffic.

Annabeth’s desperate battle continued to be lost as she squirmed and twisted, and even at one point raised up enough in the booster to firmly jam her hand up in her butt to try and keep her mess inside.

Eventually, Sally said, “Annabeth, sweetheart, you’re killing yourself. Just…let it go.”

Percy’s jaw dropped. “Mom, what?”

Annabeth sat still, catching Sally’s eyes in the rearview mirror.

Percy caught that look, too. “Okay, something’s going on. That question at the airport, ‘are you wearing,’ and then telling Annabeth it’s okay to poop herself right here in the backseat—what’s up? I feel like I’m being denied some crucial, need-to-know information here.”

Having to come to a stop in the middle of the congestion, Sally turned around to look at Annabeth, slightly grinning. “All these years, and you never did that with him?”

“Er, n-no,” Annabeth was tomato red.

Now Percy was getting a little angry. “Did what with me? What are you two not telling me?”

On the cusp of ruining her panties, Annabeth said, “Back when you were missing, and Sally and I really bonded, we…ah…”

Percy turned cold. “Please tell me you two didn’t have sex-”

Annabeth reached over and smacked him. Sally reached back around and smacked him, too.

“We did not have sex, Seaweed Brain!” Annabeth raised her voice. “She helped me with my mommy issues by being my mommy.”

“She pretended to be a baby and I mothered her,” Sally further clarified. “Teen diapers, bottles, pacifiers, baby food, and I even found teen-sized onesies online.”

Percy felt his entire world get turned upside down, shaken, then stirred, then get put right side up, shaken and stirred again. Finally, he said, “You treated my then-sixteen-year-old girlfriend like a big baby?”

“Yes,” Sally confirmed.

“You…actually changed her diapers?”

“Wet, messy, wet and messy, and some with blood in them because periods are a thing.”

Percy shuddered. “I…uh…so when you asked if she was wearing, you meant a diaper?”

“Mm-hm,” Sally said.

“And the reason you’re okay with her pooping herself here in the car is because she’d pooped herself for you already?”

“Several times, yes.” Sally kept her eyes forward on the traffic.

Annabeth kept squirming, face red and brow beaded with sweat. She wasn’t going to make it, it seemed.

Percy’s eyes kept sliding from his mother to his girlfriend of seven years now. They might as well have been married, really, in everything except an official document declaring them to be so. Percy couldn’t help but feel thrust into a crisis. His wife, his Annabeth, the Annabeth Chase, had played poopy diaper baby for his own mother, because of…mommy issues? His mother had wiped the poop from his Annabeth’s ass? Sally had seen Annabeth naked before him? Had touched her pussy and asshole before he had?

Sure, that wasn’t explicit sex, but it sure was plenty of touching.

And that’s what Sally had done. She’d reached up inside of Annabeth’s snatch to clean out any poop that might have been in there after she dirtied her diaper.

Percy wasn’t sure if he was angry and furious, just shocked and confused, or maybe…jealous? Was he jealous that Annabeth got to be a baby again, even on the grounds of emotional healing? It wasn’t like he didn’t have plenty of grounds for emotional healing, and it was his mother’s affection and attention in question here.

Percy closed his eyes and cleared his head. “…okay, then,” he said at last. “I, uh, I’m glad you two were able to get something worked out together that, er, helped you cope with those difficult times? Yeah.”

And that’s when Annabeth finally couldn’t hold it anymore. She lifted up in her seat with a sigh. Percy’s eyes popped out of his head at what he saw and heard, the seat of Annabeth’s jeans expanding slightly, a small, downward bulge growing in the fabric, and the sound of her wet farts as she pooped herself. When she was apparently finished with her accident, she unceremoniously sat back down in Estelle’s booster seat, a relieved and satisfied look on her face.

Percy stared at her, jaw agape.

Annabeth looked at him. “Enjoy the show?” But her eyes were watering, her smile trembling. After that big revelation, now she was in terror of being rejected. Percy knew her well enough to know when she was scared.

Right now, she was scared of him.

His heart ached over that.

He flashed his signature crooked smile. “Hell yeah. Smell’s a bit much, though.”

Sally cracked the windows and turned off the recirc on the dashboard, setting the AC to only bring in air, not recycle it through the cabin.

Annabeth was relieved enough. “Great. Glad to hear it. If I had known you were into me pooping in my pants, I would have done it more often.”

“Hey, I didn’t say-”

“Sorry about the smell, Mom,” Annabeth.

“Nothing to be sorry for, sweetheart,” Sally assured her. “Hardly the first time that seat has seen a stinky butt, and it won’t be the last.”

Annabeth giggled. “True. Say, is that pharmacy by the apartment still open?”

“The one that sells those diapers you loved so much?”

Annabeth blushed. “I mean, I wouldn’t say loved, but sure.”

“Yes, it’s still open,” Sally smiled. “Would you like to stop by?”

“I would definitely like not walking into your house with dirty pants, yes.”

Sally snorted. “Wouldn’t want to set a bad example for Estelle, would you?”

“Certainly not,” Annabeth grinned.

Percy blinked between the two of them. “Uh, you mean to tell me we’re going to buy diapers? Like, adult diapers? Diapers for Annabeth? Annabeth’s diapers?”

“Yes, Kronk,” Annabeth answered. “Diapers for me. And diapers for you, too, if you want some. Mom, do they still have those blue diapers with the fishies on them?”

“I don’t know about those. I haven’t actually been down the diaper aisle since after the Giant War, and you stopped being a baby. I just get medication I need from the pharmacy.”

Annabeth grinned at Percy. “How about it? Wanna try the blue fishy diapers?”

Percy stared at her. “We are almost 23. We both turn 23 in the next two months. And you want to…play baby again? When we’re here on vacation? With, mind you, a four-year-old girl at home? Isn’t that some kind of ethics violation? A couple of adults pretending to be babies while there’s a real young child in the house, being exposed to that?”

Annabeth rolled her eyes, unashamedly sitting there in her poopy pants. “I didn’t say we were going to pretend to be babies. I asked if you wanted to try the diapers. We can wear diapers under our pants and not tell Estelle.”

Percy looked to his mom for help, but she only looked amused by the situation and its prospects.

“…I’ll think about it?” Percy said, making it sound like a question.

Annabeth pumped her fist. “Yes!”

Percy had to sit there and wonder if this whole diaper/baby thing was something she’d wanted to do with him for years now, and had been too scared to bring it up, and also wonder to himself if she had brought it up, “Percy, treat me like a baby. Change my diapers, feed me baby food and bottles. Put me down for naps. Pack a diaper bag for me whenever we go out.,” what he would have done.

Hell, given what was apparently shaping up to go down today, what would he have done if Annabeth had told him she wants to put him in diapers and make him be her baby boy?

Percy couldn’t help but swallow at the latter idea, feeling a chord tug inside him that wasn’t 100% opposed to the idea of being the baby again.

PJOABDL

The rest of the car ride to the pharmacy was spent in a difficult silence for Percy.

Annabeth and Sally made small talk, Annabeth causing the car to stink with her mess.

The ever-present ADHD didn’t help matters, either, turning what was only a 30-minute car ride from the end of the previous conversation to the pharmacy parking lot into what felt like a day’s long journey, one that was punctuated with poopy underwear stink. Somehow, it was different than poop in the toilet stink, something Percy knew about firsthand from the times he would be brushing his teeth and Annabeth was pooping right next to him on the toilet, or those times where he needed the toilet right after her, and the lingering odor of her waste was still present.

Pulling into the parking lot, Percy felt his pulse quicken.

Sally popped the trunk and got out, Annabeth right behind her. As she lifted out of the booster seat and slid out through the door, Percy got a great view of his girlfriend’s butt, and he saw the brown smudge up the center seam of her jeans. It was faint, to be fair, and Percy only saw it because he was looking for it, but it was clear that Annabeth’s jeans needed to be washed. Kind of a redundant statement, as the smell released after she raised up meant the stink was soaked into the very denim, but still.

That answered why Sally popped the trunk. She was getting Annabeth’s travel bag.

With a start, Percy realized his mom was actually going to change Annabeth inside the pharmacy with the very diapers they were apparently about to buy.

And also maybe…change him, too?

Percy didn’t know what to call the feeling that wriggled around inside him.

Exiting the car, he followed his mom and Annabeth, the blonde’s bag over Sally’s shoulder, and Percy’s eyes practically glued to Annabeth’s ass, seeing that faint smear, seeing how there was no bulge anymore because Annabeth had smashed it flat from sitting in it for so long, which meant that her ass was beyond filthy inside of those pants.

The pharmacy was a pretty standard venue. Cool on the side, the smell of vanilla light in the air, one half of the place being the store, with rows of shelves stocked with pills, ointments, bandages, and all other manner of medical paraphernalia, and the other half being the pharmacy, with shelves stocked with prescriptions behind the checkout counter, employees in scrubs moving around. A light beige carpet with geometric patterns covered the floor, and the walls were painted eggshell white.

The diapers were on the far row from the door, in tall cabinets along the wall.

Sally and Annabeth were already heading there, and Percy had to put a quick pep in his step to catch up. Once over there, Annabeth released a happy breath.

“They still have them!”

The alcoves of the cabinets were full of packages of various brands of adult diapers, and one of the alcoves bore packages that had a distinct Greek design. Annabeth pulled one out and held it up for Percy to see, and he couldn’t help but feel this to be a little on the nose, seeing as how the diapers were white and sporting winding olive branch patterns throughout the body and wings, and the crotch had little owls on them that were supposed to fade away when wet.

“Um…” Percy started.

Sally moved behind him, and when he turned to look at her, she was holding up a blue package of adult diapers, still having the same Greek design, only these diapers were, obviously, blue, had patterns of various fish swimming across the body and wings, and along the crotch were collections of white bubbles that would fade when wet.

Percy’s eyes slid between them both. “Owl-themed diapers, and ocean-themed diapers. Greek-themed packaging. Right here in New York. Neither of you thinks that’s a little strange?”

“The owner is a daughter of Ascelpius,” Annabeth answered.

“Oh. That’s fair.”

That also explained why Sally didn’t have any reservations about bringing in the big clothes bag, and potentially be accosted for thievery.

“So,” Sally started with a smile, “do you want to try these?”

Percy gulped. “Y-You mean—uh, like how Annabeth—I mean, er, uh…”

Sally’s smile turned into a grin. “It doesn’t matter how old you get, Percy. You’ll always be my baby boy. I wouldn’t mind recapturing some of that magic.”

Percy squirmed in place. “I…let’s…” he cleared his throat. “Fine. Sure. Buy them, too. But don’t think I’m gonna wear one or do this whole baby thing.”

Annabeth poked him with her elbow. “Don’t worry, Seaweed Brain. Once you get over yourself and try one out, you’ll be wondering what was wrong with you for not wearing one sooner.”

Percy looked at her. “Have you been wearing diapers behind my back for the past four years?”

“I did bring a package with me on the Argo II. Ran out of them, though, and never had the chance to get more. But that was the last time. Haven’t worn one since the war was over.”

“Oh.”

They went to checkout counter, and a kindly lady around Sally’s age came over to help them.

“Ms. Sally, Annabeth, and you must be Percy!” she said. “I’m Agatha, daughter of Asclepius.”

“Er, nice to meet you,” Percy said awkwardly.

“He’s adorable,” Agatha said to Sally, and then she looked at Annabeth, “and you are developing a skin rash between your glutes. Didn’t wipe as well as you thought?”

Percy balked at how Agatha could know that, but then he remembered the debrief about the Asklepion from the Giant War, how Asclepius knew a person’s entire medical history, such as Piper’s broken arm when she was six and Jason’s failing vision, and their future, such as Leo’s (kind of) sacrifice.

“Had an accident in the car on the way over here from the airport,” Annabeth clarified.

“She refused to use the potty on the plane or the potties at the airport,” Sally rolled her eyes, “and then couldn’t hold it and pooped herself in my car.”

“You said I could!” Annabeth huffed.

“But that’s still the facts of the matter.”

Agatha giggled. “That explains the diapers. Gonna change her in the back, Ms. Sally?”

“Yep.”

“And what about you, Percy? Don’t need a change yet?”

Percy turned bright crimson, while Sally and Annabeth giggled at his expense.

“Oh, I’m not wearing a diaper,” Annabeth said. “Panties. We’re only just now bringing this back, five years later. Percy’s diapered, either.” She winked. “Yet.”

Agatha looked at Percy with a smile. “You’re missing out.”

“I-I’ll take your word for it,” Percy struggled to say.

Sally paid for the packs of diapers, and then went around to the back where the restrooms were. Male, female, and then handicapped. Sally went into the handicapped one with Annabeth, Percy seeing an adult-sized diaper changing table bolted to the wall in there from where he was standing, and then he just stood there, not going into the bathroom with them.

Sally looked at him. “Wanna try putting on your diaper by yourself?”

Percy blushed again. “They’re not mine! And no, I’m not putting one on by myself.”

Annabeth poked her head back out of the restroom. “Want me to put it on you? I will if you want.”

Percy spluttered.

Annabeth arched a brow. “Wasn’t really joking.”

“You’re not putting a diaper on me.”

“Okay, fine.” Annabeth dipped back inside.

Sally looked back at Percy. “Do you want to change her?”

Annabeth poked her head back out to see him answer.

Percy felt like he was trapped. If he said no, then he looked like a bad boyfriend, unwilling to wipe his girl’s butt and change her underwear. If he said yes, then he was giving his support to whatever…this…was supposed to be. His girlfriend being infantilized by his own mother, but in some consensual, wholesome way, instead of some freaky power dynamic way.

It also felt like some kind of test. “Would you love me if I was a worm?”

“Do you love me enough to wipe my messy butt because I pooped myself and then put a diaper on me?”

“I can…stand there…and be present…to, uh, help…” Percy slowly, carefully answered. He wasn’t exactly thrilled by the idea of seeing shit caked all over Annabeth’s blonde ass.

Annabeth snorted. “I don’t think he’s ready for that yet, Mom.”

Sally shrugged. She shut the restroom door behind her, leaving Percy to stand there by himself in the restroom corridor, reexamining his life and how much he knew about Annabeth.

Oh, by no means in terms of breaking up with her, Fates forbid, but just…what this meant going forward. Diapers. Baby treatment. The fact his mother had changed, and was currently changing, Annabeth’s pants, wiping her private areas, touching the places his dick and tongue and fingers had been all over. And they were both on board with, even encouraging him, to give it a try himself.

Wear a diaper. Be a baby again.

Percy supposed the big thing holding him back was that notion that he was a man now. Men didn’t wear diapers and pretend to be babies again alongside their girlfriends, both of them being babied by the man’s mother. It was weird. Then again, everything in Percy’s life was weird by most standards.

Percy was so deep in thought over all of this diaper stuff, that he flinched when the restroom door opened, Sally and Annabeth stepping out.

A different pair of jeans, slightly different color of denim, and they had a sequined owl on the right thigh. Percy’s eyes went next to the crotch, and maybe it was just the power of suggestion, but he thought he saw a bulge there under the hem of her shirt between her legs.

Annabeth rolled her eyes at him. “Yes, there’s a diaper under my pants, Seaweed Brain. You wouldn’t have to stand there staring, trying to figure it out, if you had been the one changing me.”

“Hey, that’s a little unfair here. I’m new to this whole…baby thing, okay? I’m still trying to digest the fact that while I was in a magic coma, my own mom was wiping your ass while you played baby for her. I am allowed to be apprehensive and have some reservations, okay?”

Then, in a rare showing for the female species, Annabeth actually conceded that point. “Okay, that’s fair.”

As she walked past him, an errant thought ran through Percy’s head, and, not thinking about if this would make her mad so much as hoping it would show he wasn’t mad at her, he gave her butt a light smack, earning a small eep! accompanied by the muffled wump of her padded butt and a slight crinkle. Percy didn’t remove his hand either.

He even squeezed, feeling the thickness of the diaper under there, making her butt even plumper than usual. Percy’s other hand came around, lifting the back of Annabeth’s shirt, revealing the waistband of the diaper rising from above her jeans. White, a soft cloth-like texture, and winding olive branch patterns.

Annabeth stood there and let him check her out.

Sally cleared her throat. “You can explore your girlfriend’s diaper at home, Percy. We’re still in public.”

“That makes it hotter,” Annabeth said.

Sally came up and gave her a much firmer smack on her diapered butt, on the side where Percy’s hand wasn’t still squeezing the goods.

“Behave yourself, young lady,” Sally said firmly.

Percy had to admit: feeling Annabeth’s diaper butt under his hand, seeing that diaper climbing out of her jeans, seeing her get spanked, it was all definitely doing things to him.

PJOABDL

As they left the pharmacy, Agatha bid them farewell.

Back in the car, the smell from Annabeth’s mess still lingered, so that stayed with them the rest of the drive to the parking garage adjacent to the apartment building. Annabeth had a much more animated energy to her than even after she messed herself. Sally seemed happier, too. Percy was grappling with these strange feelings in him, that apparently, he actually really liked the idea of Annabeth in diapers, to the point he wanted to see what that diapered ass looked like without the jeans in the way.

On top of that, circling back to that happy energy the two ladies had between them, Percy felt an innate jealousy. He wanted that happiness, too, dammit. It wasn’t as if college had been sunshine and rainbows. All the studying, midterms, finals, homework, projects, labs, bouncing between NRU and UCB, having to watch his and Annabeth’s backs for monsters of the mythological and mortal kinds, not to mention the odd quest that popped up in the form of some lazy or otherwise incompetent god that didn’t want to take care of things themselves.

Now there was the job hunt staring him in the face.

One fucking thing after another. Kind of like that one song, “And it came upon me wave on wave!”

Taking all of this into account, and Percy honestly found himself leaning more towards joining Annabeth. Why not be a baby for a little while? Why not throw off all the adulting, and be mommy’s baby boy again?

Because you’re a man. That’s why.

Oh.

This mental back and forth about being a baby for a little bit versus being a man stayed with Percy from the parking garage to the elevator to the apartment door. Annabeth and Sally could both tell there was something going on in his head, and they left him to his internal monologue.

Opening the apartment door brought forth a delighted squeal. “MOMMY!”

There was the rapid pitter-patter of little feet, and the four-year-old Estelle came running around the corner. Skinny and lithe for her age, greenish eyes, her hair had turned browner as she got older from her infancy. She was wearing an Ariel tee shirt, light green with the titular mermaid on the front doing an underwater dance with Flounder, and the shirt was short enough to expose her Huggies Little Movers diaper with Lion King prints.

The story behind that wasn’t that Estelle wasn’t potty trained at four years old. She was, in the sense that she was perfectly cognizant of when she needed the bathroom, and could tell the difference between needing to pee and needing to poop, and she could communicate this, pull her bottoms up and down, wipe, flush, everything. It was just that Sally and Paul didn’t really enforce using the toilet. Estelle was free to use her diaper or the potty whenever she wanted, in the name of her parents wanting her to have a happy childhood, compared to Percy’s where things took a drastic turn after Gabe entered the scene, and even more drastic after Yancey Academy.

To summarize: was Estelle potty trained? Well, yes, but actually no. She knew how to use the toilet, but she also knew that Mommy and Daddy were okay with changing her diapers.

Estelle proceeded to set forth a Guiness World Record for highest octave achieved by a child when she saw Percy and Annabeth.

“BUBBY AND SISSY!!”

She ran to Percy, who temporarily forgot all his mental woes in favor of scooping his little sister who could be his daughter off the ground and spinning her around with a laugh.

“Bubby! Bubby! Bubby!”

“Stelly! Stelly! Stelly!”

Estelle wrapped her arms and legs around Percy, giving him a big, wet kiss on his cheek, vibrating with happy energy. Then Annabeth tapped her on the shoulder, and Estelle, much like a monkey jumping from one vine to another, launched herself off Percy and latched onto Annabeth, making both demigods grunt.

“Annie! Annie! Annie!”

“Hi.”

Estelle gave Annabeth a big smooch, too.

The entourage entered the living room, Paul on his feet to welcome his stepson and future stepdaughter-in-law.

During the greetings, Estelle got The Look on her face from where she was, still clinging to Annabeth. Her face scrunched up and she grunted slightly. There was a muffled fart, and a sudden lump appeared in her diaper. Estelle sighed in contentment.

“Wooooow,” Annabeth drew out. “You really just pooped in your pants right here in my arms, didn’t you?”

Estelle smiled. “Yes!”

Annabeth grinned. “I pooped in my pants today, too.”

“Whaaaat?!” Estelle gasped. “Really?”

“Really, really.”

“Then you need diapers!”

Annabeth smirked and lifted the hem of her shirt, and Estelle craned herself around enough for her eyes to go wide. “It’s a diaper! Mommy, look! Annie’s wearing a diaper, too!”

Sally giggled. “I know. I put it on her.”

“Mommy changes Annie’s diapers?”

“She sure does.”

“Mommy changes my diapers, too!”

“Yes, and speaking of.” Sally motioned Annabeth over, and the blonde handed Estelle to her mother. There was already a small changing station set up in the living room, with a package of diapers, a package of wipes, and changing mat nearby. Sally set down the mat, laid Estelle down on it, grabbed a clean diaper, grabbed the wipes, and got to work.

Paul was decidedly bemused by the tale of Annabeth pooping herself and being changed into a diaper, and was standing next to Percy. “So…are you wearing a diaper, too?”

It took Percy a few seconds to form an answer, too engrossed in watching Sally and Annabeth and Estelle, the girls having a great time while the little one got her butt wiped. Percy couldn’t help but fixate on the cooing and fawning, and also how Annabeth’s shirt was riding up enough to show a decent portion of her diaper.

“Hm…? What? Oh, no, not me.”

“Do you…want…to be wearing a diaper?”

The fact that Percy didn’t immediately answer in the negative was very telling to both him and Paul.

The latter looked back over at the entryway, where Sally had set down the packages of adult diapers she’d just bought. Two bags, one pack each, Annabeth’s white package in one white bag, and Percy’s blue package in the other white back, practically shining through the plastic.

“I can only guess the blue diapers are for you.”

“They’re not my-” Percy stopped. Then sighed. “All right, fine. Yes, they’re my diapers.”

Verbally confirming they were his diapers did something to Percy. He could literally feel some kind of shift in him at the confirmation, like something unlocking, or unsealing—like something being broken down, like a wall, and sunlight was streaming in.

“Alllll done!” Sally chirped. “There’s my sparkly girl!”

Estell giggled, her dirty diaper rolled up into a heavy ball and set off to the side. “Thank you, Mommy!” She raised up and gave Sally a big kiss on the lips.

Sally looked at Annabeth. “And what’s the verdict on you, young lady? Still dry?”

Annabeth nodded.

And then Sally looked at Percy. “And what’s the verdict on you?”

Estelle gasped, eyes going impossibly wide. “Bubby’s wearing a diaper, too!? Can I see it?” She bounded up and over to Percy, reaching for his shirt to lift it up.

Percy gently swatted her hands away. “No, Stelly, Bubby’s not wearing a diaper.”

Estelle pouted. “Awwww!”

Percy swallowed, feeling three sets of eyes on him. Paul, curious as to what he’d do. Sally, gently telling him it was okay for him to ask for a diaper. And Annabeth, telling him to put one on with her because it was great, awesome, he’d love it, and also it’d make Estelle happy.

Percy swallowed, aware of the implications behind this, and then decided to be a Seaweed Brain and throw it all off. At this point, he was just hurting himself. “Fine. I’ll…I-I’ll wear a diaper.”

Estelle squealed. Sally smiled. Annabeth’s face broke into a wide smirk, and she pumped a fist. “Yes!”

Paul coughed into his fist, hiding his own little grin.

“Well,” Sally said, “go get me one of your diapers and come lay down.”

“Bubby’s gonna be a baby!” Estelle sang. “Bubby’s gonna be a baby!”

“What does that make me?” Annabeth asked.

“You’re already a baby!” Estelle chirped. “Baby Bethy! Or Baby Annie? No! I got it! Annababy!”

Annabeth’s cheeks dusted red.

Percy went over and pulled one of his diapers out of the package. The diaper didn’t have a plastic shell like Percy thought it did, but one like cloth. Softer and quieter. The diaper was blue, of course, had the bubble wetness indicators, and the cartoon sea creatures. Smiling fish, happy whales, and waving turtles. Honestly, this didn’t look appropriate for an adult, so much as an adult-sized baby. Percy blushed at the thought.

He brought his diaper over to his smiling mother and girlfriend, his baby sister dancing and singing about being a big sister.

“I’m still bigger and older than you,” Percy said.

“Nuh-uh. I’m bigger now.”

“Are not.”

“Are too!”

“Children,” Sally chided with a laugh. She patted the changing mat. “Lay down.”

Percy did so, handing over his diaper. He was blushing hard. This is really happening, he thought to himself. My girlfriend has this secret baby life with my mom, she just brought it back, and now I’m getting involved with it.

Sally reached between her son’s spread legs for the button of his jeans, and Percy jerked a little. “Wait, are you really gonna let her sit there and watch, er, this?”

He gestured to his crotch, communicating his concerns over letting his four-year-old sister see his naked junk.

Sally shrugged. “Paul, can you take Estelle to her room for a little bit, please?”

“Aww, but I wanna see Bubby’s diaper change!”

“Maybe later. Room. Now.”

Paul scooped her up and carried her away.

When Estelle was gone, Annabeth said, “To be fair, I’m pretty sure she’s seen a penis before. Like, when Paul was teaching her how to shower?”

Percy glowered at her from where he lay. “That doesn’t mean I want her to see my penis.”

“Lift your butt for me,” Sally said.

Percy raised his butt so his mom could tug his boxers and jeans down and out of the way. Just like that, for the first time in the better part of 20 years, Percy was halfway naked in front of his mom, who smirked a little at the sight of his regrowing pubic hair.

“Groomed a little, I see. Am I gonna be a grandmother in nine months?”

“Shouldn’t,” Annabeth said seriously as Sally unfolded the huge diaper, once again telling Percy to lift so she could get it positioned under him. “We’ve been using condoms for now. We want to get stable jobs and see where our income’s gonna be at first.”

Percy truthfully did not know how to feel about his girlfriend talking about their sex life in front of his mother while she was putting a diaper on him.

Sally sprinkled the baby powder over Percy’s crotch, thankfully remaining flaccid through force of will. He did not want to pop a boner in front of his mom, especially because she was the one touching him. Sally brought the diaper up between his legs and spread the wings, doing the bottom tapes on either side first, then the top ones, smoothing the wings down for a nice, snug fit.

“How’s that feel?” Sally asked. “Too tight? Too loose?”

“Um,” Percy wiggled a little. “I guess it’s good?”

“Up we go, then.”

Percy maneuvered back to his feet, given his bottoms were still around his ankles. He did a couple of squats, blushing at the faint rustle of his diaper. “It’s good,” he confirmed.

“Excellent! First time I’ve diapered that bottom in 20 years. Still got it.”

Percy pulled his boxers and jeans back up over his diaper.

Annabeth’s eyes were glued to the back of his jeans. “Your butt looks awesome.”

“You can tell?” Percy squeaked.

“Only because I know what to look for. Relax, Seaweed Brain. No one can really tell there’s a cute diaper on your butt.” Annabeth unceremoniously got herself a firm handful of that butt, too, making Percy jump away.

“Hey! Careful back there!”

Annabeth giggled.

Paul’s voice came from around the corner. “Everything good in there, now?”

“We’re good!” Sally called back. “The babies are all freshly diapered and fully clothed.”

Estelle came rocketing around the corner, running straight to Percy. “I wanna see, I wanna see!”

Percy lifted his shirt to show the high-rising waistband of his diaper, conscious of what all of this could do to her developing little mind in the years to come.

Oh, yeah. My big brother and his wife are big babies that wear diapers!

Estelle’s eyes went wide. “It’s so cool~! Are you wet? Did you poop yourself like Annababy?”

Percy blushed. “Mom just put it on me.”

“So?”

“It’s clean.”

“Come get me when you need a diaper change, and I’ll get you all cleaned up!”

“I…er…I’ll keep that in mind.”

Estelle beamed at Sally. “I’m gonna be the bestest big sister in the world!”

Percy palmed his face. “You’re not the big sister.”

“Am too!”

“Are not.”

“Percy, be a good boy and stop arguing with your big sister,” Sally chided.

Annabeth snorted and looked away.

Percy gawped at her.

Estelle grinned in victory. “Told you so.”

“Estelle, quit antagonizing your baby brother. You’re making him upset.”

“Oh. Yes, Mommy.”

Percy gawped some more at his mother. “Why are you encouraging this?”

“Because it’s cute.”

“How about we go to the park?” Paul suddenly suggested.

“Yay!” Estelle cheered.

“Wait, like, go outside?” Percy shifted.

“Do you see a park inside the apartment?”

“But…we’re…the diapers…”

“The diapers no one can tell we’re wearing?” Annabeth supplied.

“Park, park, park, park,” Estelle chanted.

Fuck it, Percy thought. Just start rolling with it.

“Okay. Park it is.”

Estelle squealed in delight.

Sally had a thought. “Let’s go to the store first and get some snacks. Cookies?”

“Cookies!” Estelle readily agreed.

Sally nodded. “Cookies it is. Paul, help me get the diaper bags packed.”

“BagsSsSs?” Percy emphasized the plural.

“Yes, bags. Multiple babies means multiple diaper bags.”

“But I…I’m not gonna…”

“Where will you be when diarrhea strikes?” Annabeth asked philosophically. “Accidents can happen to anyone, anytime. Better to have the diaper bag, and not need it, than to need a diaper bag, and not have it.”

“Thank you, Wise Girl, very cool.”

Annabeth nodded.

And so Sally and Paul put some diaper bags together, Annabeth and Estelle literally playing pattycake together, Percy standing there wondering how his life had come to this. Quests, wars, college, and now he was wearing a diaper, his girlfriend was wearing a diaper, his baby sister was wearing a diaper, and his parents were packing diaper bags for all three of them, Percy and Annabeth’s having to be jerry-rigged from spare backpacks filled with two sets of clothes each from their travel suitcases, two diapers each, a package of wipes, and a bottle of baby powder. Then, with a wink from Sally, she got two od Estelle’s old baby bottles and put one in each of the young adults’ diaper bags, while Estelle got her Ariel-themed sippy cup, an action that helped further the idea that she really was the big sister now, Percy and Annabeth being the babies.

Estelle had a pair of shorts put on her for modesty, as no one wanted the four-year-old running around with her diaper butt showing for everyone in public to see.

Minutes later, and everyone was piled into the Prius.

“It’s stinky,” Estelle fanned her nose from her booster seat.

“I pooped my pants earlier,” Annabeth reminded her “big” sister.

“Your poo-poo is very, very stinky,” Estelle nodded sagely.

Annabeth nodded in agreement.

Percy also nodded in agreement.

Half an hour later, and the happy family was at the grocery store. Paul and Sally grabbed the diaper bags without a second thought or ounce of deliberation, treating it like it was the most normal thing in the world to have a child and two young adults still in diapers with them. Sally shouldered her purse on one arm and Estelle’s diaper bag on the other, while Paul fully equipped Annabeth’s diaper bag and held Percy’s in his hand.

Percy was still getting used to this, while Annabeth was already well in stride. Granted, she evidently had about six months of experience with this whole baby treatment thing back from the Giant War, but still.

While his diaper was bulky, it wasn’t so bulky as to make him waddle or otherwise hinder his gait. It was just an ever-present feeling between his legs. Thick, soft, padded, hugging snug around his hips. He was wearing a diaper. Him, Percy Jackson, with a list of accolades, feats, and accomplishments to rival, if not surpass, Hercules himself, was wearing an adult diaper at the age of 22 that his mom had taped onto his butt, and it had nothing to do with medical problems.

“Are you mad at me?” Annabeth asked in a neutral voice as they walked towards the front entrance.

Percy knew her neutral voice was actually the voice she used to hide how scared she was. Scared of him. “Certainly confused and shocked,” Percy answered evenly. “I mean, my girlfriend, of all these years, once played baby for my mother, to the point she was totally okay with shitting her pants in the car, and getting her ass wiped and diapered not even an hour ago. Just…I guess I can see why you didn’t tell me any of that, but still…like…why? I definitely feel like my trust in you has taken a hit, because what else have you been up to you that you haven’t told me about?”

Annabeth’s mouth set into a thin line. “Do you think I’ve cheated on you?”

“Never in a million years, no.” Percy sighed, then changed subjects. “All things considered, this diaper is really comfy.”

“It is, isn’t it?” Annabeth brightened a little.

“Is something you want to keep doing? I mean, diapers. Playing with diapers. Not really the whole baby thing. At least not for my mom.”

That thin line of a mouth returned again. “I…um…”

“You have a diaper fetish, don’t you?”

Annabeth stopped, a look of realization on her face. “You know what? I actually think I do.”

Percy swallowed. “…okay,” he said slowly. “I…we’ll talk later.”

“So you’re not mad at me?”

“I-” Percy stopped. Was he? If he was mad at her, what would it accomplish? Where would it go? Finally, he decided, “No, I’m not mad at you. But you’d better be honest with me from this point forward.”

“Sure thing…Daddy.”

Annabeth pecked him on the cheek and flitted away, leaving Percy feeling feelings worming around inside of him.

They were both wearing diapers, and she still called him Daddy. And she admitted to having a diaper fetish after all. What a day this was.

A buggy was procured and all the bags placed within, and into the store they all went. Navigation to the bakery section was simple enough, and everyone picked out a small package containing three cookies within, Percy obviously getting the cookies that were died blue and had blue chocolate chips. It was when Estelle wanted some juice and they navigated to the juice aisle that things got hairy.

The juice aisle had, of course, juice. Cranberry juices, other fruit juices, Gatorade, lunch box juices like Capri Sun, and also water. Cases of water, gallon jugs of water, quarts of water, water bottles. Basically all the non-refrigerated consumable liquids were on this aisle, included the novelty juices, such as the fancy juice bottles with the character stoppers, particularly the Ariel juice bottle.

“You want this one?” Paul asked.

“Uh-huh, uh-huh!” Estelle nodded excitedly.

Nearby, a crabby looking lady frowned at her exuberance.

Paul reached for it, but Estelle shouted. “NO! I wanna get it!”

“Inside voice, young lady,” Paul jumped on her.

Estelle shrank. “Sorry, Daddy.”

Sally stepped in. “How do we ask for things, sweetie?”

“Daddy, can you please lift me up so I can get my Ariel juice?”

“I sure can, princess.”

Paul bent down, put his arms under her pits, and lifted her up. In doing this, however, he caused Estelle’s shirt to get bunched up enough to show plenty of the waistband of her diaper.

The crabby lady saw that and scoffed.

Sally and Paul seemed to pretend to not notice, but Percy saw it, and that reckless impulsiveness he was known for came roaring up to the surface. “Hey, is there something you’d like to say?”

The woman looked at him, disgusted. “You oughtta be ashamed of yourself, having a daughter that old and still wearing diapers. Why, I had all three of my children toilet trained before they were two-”

“She is toilet trained,” Percy more or less blurted, not bothering to correct her on how Estelle wasn’t his daughter. “There’s no problem with letting her wear diapers if she wants to. I do it.”

And he proceeded to lift his shirt and show the waistband of his own diaper.

The lady stared at it, gobsmacked, and then she was quickly reaching into her purse. “I’m calling the police on you freaks.”

Which then prompted Percy to summon a water jug from the shelf into the lady’s head hard enough to send her sideways into the shelves, knocked out cold.

“Oh, great job, Seaweed Brain,” Annabeth moaned.

“Let’s move,” Paul said, already pushing the buggy away from the aisle, pretending he hadn’t heard anything.

Everyone followed.

Estelle giggled from the basket. “That was cool!”

Percy smiled thinly, aware that this was probably one of those core memories he’d heard about, and that he’d just demonstrated an act of violence against someone who arguably had a decent case to call the police. After all, four-year-olds in diapers weren’t necessarily common, and it did look like child neglect, letting a child walk around in a sack of filth, and the final nail in the coffin was, of course, Percy showing off his diaper, certainly making it look so much worse than what it really was.

Anyway.

The Jackson family purchased all of their items and left the store.

On their way to the park, Percy felt a twinge in his lower tummy, causing him to swallow heavily. Great, now he had to poop. He didn’t know why that made him nervous, it wasn’t like he couldn’t take himself to the park restroom and take his diaper off and just poop in the toilet like a big boy. It wasn’t like his mom was going to grab him and be like, “No, you’re wearing a diaper. Use it.”, and if she did, Percy, for all his love of her, was not going to let himself be handled like that.

Of course, why not just poop in his diaper? He already told himself he needed to start rolling with things, just let them happen, but that masculine pride kept rearing up. You’re a man. Men do not willingly poop in adult-sized baby diapers.

Well maybe I don’t want to be a man right now, another little voice in Percy shot back. Maybe I want to be a baby again, just for a little while. A carefree, happy little baby.

Percy was so deep in his internal argument that he didn’t realize they were parked at the park until Annabeth nudged him. “This is Annabeth calling Seaweed Brain. Annabeth to Seaweed Brain. Over.”

“This is Seaweed Brain to Annabeth. Hi.”

“Hi. We’re here.”

“So we are.”

Percy got out and stretched, then quickly pulled his shirt back down, looking around to make sure no one had seen his diaper.

Annabeth giggled next to him. “Yeah, we’re gonna have to be careful we don’t have another wardrobe malfunction.”

“Is it really a malfunction if it was done on purpose?”

“Fair point.”

“Bubby! Play!” Estelle chirped. She grabbed his hand and didn’t give him a choice.

They played tag, as best a grown adult demigod and a four-year-old could play tag, Percy doing his best to be a good sport. They played hide and seek, of course, taking turns in hiding and seeking, Annabeth not allowed to play with her Yankees cap. They got some looks from other people in the park, looks Percy and Annabeth were already used to from years ago whenever they took infant Estelle out with them.

Wow, they sure did get busy fast. Young as they still are, and old as that little girl is?

Sally and Paul sat on a bench with the diaper bags, watching their kids have fun, both of them glowing with a happiness only parents could feel. Of course, because they were watching, and because Sally knew her son, she was seeing his body cues. A crick in his step, a brief grimace, other little ticks and twitches.

She smirked faintly.

“What’s up?” Paul asked.

“Percy’s gonna have a messy diaper soon.”

“Oh.” After a brief pause, he asked, “What about Annabeth?”

“She pooped already this afternoon in the car on the way to the apartment after the airport. I doubt she’ll need to poop again until later this evening, if not tomorrow morning. That being said, she is wet.”

“How do you know?”

“I saw her squirming in the ride over here, then go really still, and then she relaxed.”

“Ah.”

Back to Percy, yes, his need to poop was getting stronger, almost to the point like it had been with Annabeth. She saw it, too.

She smirked at him. “Gotta make a stinky?”

“Keep your voice down!” Percy hissed.

There were plenty of other people in the park, after all, and it had been a battle of awareness in constantly tugging his shirt down to make sure it wasn’t riding high enough to show his diaper. The last thing he wanted was for his girlfriend to be blabbering that to everyone who could listen.

Annabeth giggled. “Then what’re you waiting for? Embrace your inner baby. Just go in your diaper. That’s what it’s for.”

“I can’t just…I mean…urgh, how did this day get so complicated?”

“It’s not complicated, Seaweed Brain. You’re just making it complicated.”

Fuck it. Fine.

Percy looked around the park and zeroed in on a tree that was mostly away from everything, and started walking towards it.

Annabeth snickered. “Are you seriously sneaking away where no one can see you so you can-”

“Yes!” Percy blushed.

Yes, he was seriously sneaking away where no one could see him so he could poop in his pants.

Percy made it and looked around one more time, and then fully went behind the tree, and then fully started going. He first sat against the tree like he was sitting on the toilet, pushed, but that didn’t work. He then stood and bent his knees a little, and then pushed some more. That worked better, as he could feel his bowels moving, feel the mass sliding. His butthole opened and the turtle head started emerging, and he had to push more. Good gods, this was a lot harder than Annabeth made it look in the car.

With a red face and another big push, Percy finally did it, and realized why it required so much effort. It felt like he shit an entire football! A huge, firm, sticky mass settled almost violently into the seat of his diaper with a hefty, quick fart, and his butthole actually burned and stung from how wide it just dilated to let the poop out.

But it was done. For the first time in the better part of 20 years, Percy had pooped in his diaper. He could feel the large lump in his pants, and when reached around to confirm just how big it was, he blushed, confident people would actually be able to see the sagging seat of his jeans now.

He jumped almost into the tree when he felt little hands touch the bottom of his shirt. “What the—Estelle!?”

“Did Bubby go poo-poo?” she asked, eyes wide and excited, as if the idea of her big brother pooping in his diaper like her was the greatest thing in the whole world, instead of really gross and weird.

“I…er…” Percy hesitated, still mindful of how this day could very well be one of those “core memory” days that stayed with a person forever, and helped shaped who they became. Given that Estelle was already four and still in diapers by choice, Percy was honestly a tad worried they were all shaping her to become a diaper fetishist.

“You did, didn’t you?” Estelle giggled. “That means we’re matching! I’m gonna go tell Mommy we’re both poopy!”

And she ran off to do just that, and Percy caught up to her and was able to clamp a hand over her mouth just as she started shouting. “Mommy! Bubby and I poo-”

Clamp!

“Estelle, shush,” Percy said. “We don’t need to be shouting.”

“But we’re outside,” she said, confused, when Percy removed his hand. “We don’t have to use our inside voices.”

“And we also don’t need to shout at everyone that we both, uh, pottied in our diapers, okay?”

“But why not? Mommy needs to know.”

“And we can tell her when we walk over to her, and don’t shout.”

“But if we shout now she can get started on getting the diaper bags ready-”

“Estelle,” Percy said in his Leader Voice. “There will be no shouting in the park about needing diaper changes. Got it?”

Estelle’s extended her lower lip in a pout. “Okay…”

“Good girl.” Percy ruffled the top of her head and kissed her forehead.

Together, they went back to Sally, Percy trying to walk straight and not waddle due to the solid mass in his diaper. Annabeth was already there, smirking.

“Stinky,” she said.

Percy stuck his tongue out while Estelle nodded. “Uh-huh! Both of us! We’re matching!”

“Oh, I smell that!” Sally grinned. “All right, who wants to be changed by who?”

Percy’s stomach dropped. “What? Changed? Here? Like, on this table?”

“No, in those restrooms over there that have family rooms,” Sally pointed off to the side.

“Oh. But in there?”

“With locking doors, yes.”

“But…”

“But what?” Sally continued grinning. “You’re not getting in my car with that smelly butt. It was bad enough Annabeth had an accident-”

“I’d hardly call pooping herself on purpose on accident,” Percy blurted.

“It was an accident, because I couldn’t hold it anymore.”

“Same difference.”

“Whatever.”

“Anyway,” Sally cut in, “that poor car has seen enough dirty butts today, so no, none of you are riding home in dirty diapers to be changed back at the apartment, so yes, diapers will be changed in those restrooms. Now, pick who’s changing you.”

“Already got dibs on Sally,” Annabeth said.

“Daddy already changed me,” Estelle chirped. “I want Mommy!”

Percy felt bad, because he understood the situation he was trapped in. He looked at Paul, who was stone-faced but his eyes had a twinkle in them. They had a manly understanding pass through them without words, and Percy said, “I’ll…uh…Paul…Paul can change me—wait. Why cant I just change myself?”

“Because you’re a baby, sweetheart. Babies can’t change their own diapers.”

The hell we can’t, Percy thought to himself, already knowing how he was going to handle this, and then he realized that he just mentally agreed with his mom over being a baby.

Eh, whatever.

And so Sally took the girls to the one family restroom, and Paul shouldered Percy’s diaper bag and took him to the other family restroom. When the door shut, Percy held out his hand and Paul handed him the diaper bag.

Percy had love for Paul, Paul had love for Percy, but they were both in the mutual agreement that Paul was not changing Percy’s diaper. That was a level of physical intimacy that they didn’t have, nor were they ever going to have.

As for Percy changing his diaper: water. He turned on the sink and used the water to clean his privates. Water off, he took out a clean ocean-themed diaper after rolling up the dirty one and tossing it into the trash, which already had a couple of used diapers and pull-ups down inside, and taped it one while standing up. He had to adjust the tapes a couple of times, but he got it to fit the way he wanted it to.

He pulled his pants and underwear back up over his diaper, washed his hands even though he hadn’t actually touched his privates, and then rejoined Paul outside.

“Did you put another diaper on, or did you stick to underwear?”

Percy paused, just now appreciating that those options had been available to him, but he’d, apparently, unconsciously chosen the diaper.

“Diaper,” Percy awkwardly.

Paul hummed. “Are you okay with this? Diapers? Baby treatment?”

“…I’m warming up to it,” Percy admitted slowly. “Just…you know…all the quests, monsters, wars, fighting, college—all the stress, you know? So stress relief, sure, but this? You know?”

“Yes, Percy. I know. That is the third time in that statement you asked me that.”

“Oh.” Percy grinned sheepishly. “At the same time, though…it’s nice. Mom being, well, my mom again. Like when I was a baby. Feels like capturing that old childhood magic, like when Santa was real. And the Easter Bunny.”

Paul hummed again. “We can stop this anytime you want.”

This time, Percy hummed. And then he popped a question. “Did you change my girlfriend’s diapers, too?”

“No. Only Sally did the diaper changing, and any clothes changing or bathing. I only did the spoon-feeding and the bottles and diaper bag packing. And peek-a-boo.”

Percy sighed in relief. “Thank you.”

“Yeah, I wasn’t about to be touching a sixteen-year-old girl’s private areas that wasn’t my daughter or family member.”

Percy smiled thinly and gave Paul a hug. Paul hugged him back, and then accepted the diaper bag.

Minutes later, Sally and the girls came out of the restroom.

“How’d it go, boys?” Sally asked.

“He got a little bit fussy and didn’t want to be still, but I just blew a couple of raspberries on his tummy and that calmed him down,” Paul said casually. “All spick and clean now!”

Percy was giving him a flat stare.

Estelle was chattering Annabeth’s ear off, but she was only paying half attention to the girl. She and Sally both knew Paul was full of what used to be in Percy’s diaper, and that Paul hadn’t seen much less touched Percy’s butt.

“All right. So long as he doesn’t stink up the car or get a rash on the way back home.”

“We’re going home?” Estelle whined. “But I wanna play more!”

“We can come back and play more tomorrow. Now we need to get back, shower, and get dinner ready.”

“Dinner! Pizza, pizza, pizza!”

Sally looked at Annabeth. “Pizza?”

“Of course.”

Sally looked at Percy.

“Yeah,” he said.

Paul shrugged. “Sure.”

And so they loaded up in the car and drove away to get pizza.

With there being only one bathroom in the apartment, showering was a process of Sally bathing Estelle, Annabeth bathing herself with a wink to Percy, and then Percy bathing himself, intent on cashing in on that wink later. The clean diapers obviously came off for bathtime, and then went back on after baths, Sally and Paul working together to get the babies dressed in their pajamas, Estelle getting her favorite Ariel footy pjs, while Percy and Annabeth had only packed simple shirts and shorts. Their diapers bulged plainly against their bottoms, with Annabeth’s shorts almost not even fitting, with plenty of her diaper showing through the leg holes.

It made Percy’s own diaper grow tight in the front.

Dinner was an affair, with Sally fixing three sippy cups with juice, and Paul cutting the pizza slices into bite-sized chunks for the babies so they wouldn’t try to bite off more than they could chew and potentially choke. Estelle, Percy, and Annabeth all had bibs tied around their necks, though Percy and Annabeth’s bibs were folded towels as all of Estelle’s bibs were only big enough in the neck for a little girl.

Even though pizza was a finger food anyway, it was made into a childish form that left Percy feeling embarrassed, while Annabeth was still teasing him about his inhibitions as she shamelessly got loose sauce on her lips and chin.

“Quit fighting and just be a baby. You’ll have tons more fun, I promise. I mean, you already pooped in your diaper. It doesn’t get any more baby than that.”

And so Percy finally gave up.

He scooched closer to Sally and handed her his plate of cut-up pizza. “Ahhhh,” he went, opening his mouth wide. Sally started feeding him by hand, occasionally dabbing at his cheek when he got sauce on him, and grabbing his princess sippy cup to put the nipple in his lips so he could suckle.

The evening’s entertainment was the Little Mermaid, everyone getting cozy on the couch together, Estelle nestled between Paul and Sally, Percy on Sally’s other side, and Annabeth on the other side of him, the three babies having pacifiers clipped to their shirts, Percy having to engaged in a little bit of minor feminization as he was given one of Estelle’s princess pacifiers and lanyards, but he hardly minded.

He wet his diaper of his own volition closer to the end of the movie, Annabeth doing the same, along with Estelle. By the time the movie was over, there were three wet diapers and a sleepy little girl.

“Not tired,” Estelle yawned, her eyes drooping. “Wanna play with Bubby and Annababy some more…”

“And you’ll have all day tomorrow to play with them,” Paul assured her as he carried her up the stairs of the apartment to her bedroom to change her diaper and get ready for night-night time, leaving Sally with Percy and Annabeth.

“And then there were two soggy butts on my couch,” she said.

“How do you know?” Percy asked, taking his pacifier out of his mouth.

“Mom powers. I know when the babies have dirty diapers.”

Percy couldn’t argue against that.

Sally laid them down in the living room, Annabeth first, Percy second, and got them changed into clean diapers, Percy less reserved now.

Paul came back down the stairs, conveniently after the diapers were changed and everyone’s privates were covered up. “Estelle’s asleep. Went out like a light. Couldn’t even stay up for a bedtime story.”

Sally hummed. “Mean she’ll be awake in a few more hours, wanting a snack.”

Paul chuckled.

“Wait for me in the bedroom, sweetie. I’ve got one more thing to take care of.”

And so Paul went to the bedroom, shutting the door behind him.

Annabeth looked excited.

Percy blinked. “What?”

Sally started unbuttoning her blouse. “Still thirsty?”

“Yes!” Annabeth said, her tone a mixture of affirmative and victory.

With a start, Percy realized his mom was about to breastfeed Annabeth, that she had breastfed Annabeth, which made him feel weird because his mom had breastfed him, too, and that she was giving him the opportunity to breastfeed again, this time alongside his girlfriend. Percy had to sit there and briefly wonder if suckling from his mother’s tit at his age meant he had an Oedipus Complex.

To be fair, he was dating his first cousin once removed, and more than half of his extended family was incestuous anyway, but at the same time, was that really an excuse to suck his mom’s tits at 22?

Eh, he already pooped and peed in diapers today, his mom fed him chopped up pizza, and held a sippy cup to his mouth.

Sally got cozy on the couch, blouse removed, and her maternity bra undone. Percy realized she’d prepped for this, because her nipples were pert and already leaking, little drops of milk visible amidst the pink nubs. Annabeth took the left one, getting comfy on that side of the couch, and so Percy took the right breast. There was a moment of hesitance, his mouth partly open, mostly because he looked at Annabeth and saw how calm and serene she was as she suckled, her eyes closed in bliss as her cheeks bowed in and out, her throat undulating up and down.

It was almost a tragic sight, actually.

Had Athena ever visited Annabeth as a baby? Had the goddess of wisdom ever breastfed her? Changed any of her diapers? Had Athena ever actually mothered any of her children, even to the modern day, almost seven years after the Titan War? These questions put it into perspective for Percy just why Annabeth so readily accepted being a baby for Sally. He also supposed his mom had no problem being her surrogate mother because A), she was nice like that, and B) she never got to have a daughter.

Not counting Estelle because that was a few years after the Giant War anyway.

Percy took his mom’s nipple into his mouth and gave it a light suck. Milk shot into his mouth, dousing his tongue, and he nearly moaned at the flavor. It was warm and sugary, thick, but not too thick, and he sucked some more, doing his best to keep his teeth from touching anything and not to suck too hard to where he hurt Sally.

Percy and Annabeth suckled until they both had their fill of Sally’s milk, Annabeth pulling away first, Percy only a minute or two later. Sally gently patted Annabeth’s back until she burped, and then did the same to Percy until he burped, too. He blushed a little, while Annabeth looked decidedly pleased with herself.

“Let’s get the two of you into bed,” Sally said softly.

By no means did she carry either of them up the stairs to the apartment’s guest bedroom, as she was only a human woman and Percy and Annabeth were grown, muscular adults, both taller than she was, so they just followed her up there. The guest room was simple and plain, with a twin-sized bed, a dresser, a bookshelf, a desk, and a closet. The size of the bed didn’t mean much, as the two babies had comfortably squeezed on it before, mostly by Annabeth flopping atop Percy.

“Keep it quiet enough,” Sally said with a wink as she pulled the blanket over the babies.

She turned the nightlight on to provide a little bit of light in the guest room, and took her leave with a knowing smile. No sooner had she shut the bedroom door than did Annabeth smirk down at Percy.

She raised up and sat back, putting her feet in his face as she tugged her shorts off to reveal her olive-themed diaper, and then she raised back up to take Percy’s shorts off. He reached for the tapes on his diaper, but Annabeth swatted his hands.

“You and I both know I can’t keep quiet enough to not wake up Estelle while you fuck me.”

Percy smirked. “That is true.”

Annabeth got his shorts off to reveal his own ocean-themed diaper. She pulled out the front far enough to stick her hand down there and fish out his dick, the rapidly hardening meat now allowed to stand erect against his navel. Lowering the front of his diaper back down, they both noted how the tip poked all the way out of the waistband.

Annabeth maneuvered herself to where she could start licking the tip while also using her hand to rub the front of Percy’s diaper, having to it methodically and gently to keep the crinkling to a minimum. Percy had to cover his face with the pillow as Annabeth’s warm, wet, wonderful tongue lavishly attended to his tip, and her hand ministered that soft, lovely padding across his shaft.

Dare Percy say, but the combination of Annabeth’s hand and his diaper was better than her hand alone. Maybe he had a diaper fetish, too., or at least was warming up to the idea of incorporating diapers into their sex life more often.

Annabeth suddenly stopped her licking and rubbing, and when Percy moved the pillow to investigate what she was doing, he got a face full of her diapered ass. She farted in her diaper, a muffled prrrbt, assaulting his nose with her gas that only served to drive him wilder, and then she started pissing herself. Her diaper hissed from the intensity of the stream, rapidly warming and swelling against Percy’s face. Percy moaned into her diaper as she wet herself on him. The faintly sour stench of her pee, the warmth of her diaper, the texture of the cloth backing—all as wonderful, if not more so, than anything else she’d done for him in the bedroom.

Then Percy suddenly had a thought. He grabbed Annabeth’s hips and lifted her lithe body clean off his face, arms fully extending. He could lift a car, as proven during s weight training exercise at New Rome, so Annabeth’s 130lb muscular ass was nothing.

Annabeth spread her legs and craned her neck to look down at him from the gap. “Did I do something wrong?”

“Are you about to poop yourself again?”

“No? Just had that fart. Why, do you want me to poop my diaper in your face?”

Percy thought about it. Annabeth wetting her diaper in his face had been great enough, but messing in it? The seat bulging out, the stink, the soft glob to be mashed and squished around, grabbed and played with.

“Yes,” Percy decided.

Annabeth smirked. “I usually have some ammo in the morning.”

Percy smirked too. “I look forward to target practice, then.”

He lowered Annabeth back down, and she pressed her diaper into his nose. Hands still on her hips, he pulled her down even lower and rubbed his face all in her diaper while she lowered herself forward and started licking and rubbing his dick again. Percy had to occasionally lift her back up so he could breathe, and he sometimes gave her a light spank while kneading her wet, padded ass, and Annabeth would buck and grind her hips a little, too, and she eventually slipped a finger inside the leg hole of his diaper in order to play with his asshole a little bit, while continuing to rub the front of his diaper and lick the protruding tip of his dick.

Their padded 69 continued like this for a few minutes before Annabeth started to squeak and moan, her core having built up enough pressure. She raised up off of Percy, pulling her hand from inside his diaper. He looked at her in question.

“Wanna do something,” she breathed.

Making a good show of sniffing her finger and even sticking it inside her mouth to give it a good suck, driving Percy wild, she repositioned to where she was straddling him, looking down at him, her diapered crotch sitting upon Percy’s diapered crotch. His dick twitched in anticipation.

Annabeth took her finger out of her mouth and put it to Percy’s lips, and he took it in and sucked on it, too, not really tasting anything.

Then Annabeth ground her hips, making Percy grunt around the finger in his mouth. She bucked again, wiggled, gyrated, moved her hips around in the vague shape of the word “coconut,” doing everything she usually did while riding him, only now there were diapers between their sexes. Annabeth put her thumb in her mouth to muffle her own moans, and Percy reached up to support her weight by placing his just under her boobs on her shirt, using his thumbs to knead her nipples through the fabric.

Annabeth came first, shuddering and convulsing, pitching forward with a breathless gasp as she started squirting in her diaper so hard Percy could hear it and even feel her cum shooting into the padding her orgasm had so much intensity. He was on the edge, as well, the warm thickness of Annabeth’s diaper having slid over his tip and pressed against his shaft enough to where all he needed to do was buck his hips against her five more times until he was shooting his load onto his stomach.

Annabeth’s finger had remained in his mouth, and so he sucked hard around it as he grunted through his orgasm.

They laid there for a few seconds, basking in the afterglow of their sex, and then Annabeth took her finger out of Percy’s mouth, wiped the drool off on her shirt, and scooched down enough to where she could lick his stomach clean, and then used more of her shirt to wipe away anything that remained. Then she took her dirty shirt off and tossed it aside, letting her boobs hang free.

“Want me to change you?” Percy asked.

“In the morning after I poop on your face,” Annabeth said with a tired smile, flopping on top of Percy’s chest after pushing his softening dick back into the confines of his diaper and readjusting his tapes so they were secure again.

“Dirty baby,” Percy smirked.

“Your dirty baby, though.”

“Now and always.”

“Are you okay with this? Diapers, baby stuff?”

“I certainly think so.”

Annabeth smiled against his chest. “Goodnight, Daddy.”

Percy kissed the top of her head. “Goodnight, Annababy.”