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Grover led Percy into the woods near camp.
As soon as they were far enough away from the other campers, Percy felt Grover’s lips lock with his own. Grover pushed his tongue into the taller male’s mouth and began to unbuckle Percy’s trousers.
Percy’s dick was hard as it pressed against Grover’s length through his underwear. Grover’s large balls hung heavily under his cock as he rubbed against Percy’s front.
“Do you think you’ll be able to take me this time?” Grover teased, manhandling Percy through his clothes.
“Shut up,” Percy shot back with a smirk.
Grover pushed Percy down until his mouth brushed the satyr’s hard cock.
Percy took the animalistic tip of the cock into his mouth. Even just the tip was enough to fill the half-blood’s mouth but Grover tried to push as much inside anyway.
Percy was barely halfway down the cock as he felt it hit the back of his throat.
“You’re doing better than last time,” Grover smirked.
Percy could only moan in response as he was forced to take in more of Grover’s massive cock.
Grover’s shaft was already spurting pre down Percy’s throat, pooling in his stomach as Grover slammed his hips into Percy’s face forcing another inch into him.
Percy grabbed onto Grover’s hips and together they slammed the rest of the cock into him so that Percy’s face rested firmly against Grover’s pelvis.
“Wow, you took that really well, Percy,” Grover said, ruffling his hair.
Percy trailed his hands on his own neck and felt the cock inside as it pulled out and slammed back in as Grover face-fucked him.
“Your throat is so tight!” Grover bleated as he slammed his length into his friend.
Percy’s camp half-blood shirt began to ride over his belly as it filled with Grover’s precum, with each slam of Grover’s dick making it slosh noisily inside him.
Grover gripped the back of Percy’s head and brought it from tip to base repeatedly, eliciting moans from both boys that would make even Aphrodite blush.
It wasn’t much longer until Grover could barely contain himself and with a shout of ecstasy, he began cumming down Percy’s throat.
Percy’s stomach began to fill like a water balloon as Grover’s large balls emptied themselves into him.
His shirt, which had fitted him loosely, was now practically bursting at the seams as he tugged it over his belly in a vain attempt to contain his gut.
Percy’s dick strained in his pants and as he drank from the faucet that was Grover’s dick, he reached his own climax, spilling his seed and staining his underwear.
When Grover finally stopped his torrent, he picked Percy up and kissed the inflated boy passionately.
As their tongues clashed, Percy let out a moan and Grover rubbed Percy’s taut belly gently.
“I wasn’t expecting you to hold all of my cum,” Grover said, amazed.
“I look like a glorified balloon,” Percy complained.
Suddenly, a tearing sound entered the air.
Percy looked down to see his shirt had ripped over his belly, exposing his white, orb-like belly.
“You look like you’re pregnant with my kids,” Grover laughed, nuzzling against Percy’s neck.
“How am I going to be able to walk out like this? Everyone can see my body!”
“You didn’t seem that concerned when you were sucking my dick.”
Percy reluctantly followed Grover out of the woods to his cabin to get a shirt, unfortunately, on the way, there were multiple people who saw his engorged form.
None of the people said anything as Percy’s cum-filled belly swayed as he walked behind the satyr, but their looks were enough to convince Percy not to get face-fucked in the woods again anytime soon.
~~~Time skip~~~
“It wasn’t that bad,” Grover said as Percy looked for a shirt that could fit his new shape.
“It was! Everyone’s probably wondering what happened to me.”
Grover walked over to Percy and enveloped him in a hug which caused him to jiggle slightly, making the cum in his belly slosh and gurgle with every movement.
“I’m never living this down,” Percy said.
“Then there’s nothing stopping me from doing this again sometime~”