The ride over to the party was a complete blur. Mikey remembers getting into Josh's car, and vaguely heard Josh and Will talking strategy, but he spent the entire ride staring at his monstrous bulge. It looked like he was trying to smuggle an eggplant and a set of lemons in his pants, there was no way this was going to look realistic to anyone. Hell, it wasn't realistic at all. His cock was only 5 inches this morning, and more than doubled into a foot long monster in just an hour. But god, was he horny.
Just as he completely forgot the ride over, Mikey barely remembers how he got to where he is now. He woke from his lucid trance to himself sitting on an old sofa in a poorly-kept frat house. He saw people dancing all around him with flashing lights and loud music surrounding the space. Somehow, he thinks he already had some beer because he was feeling a little loopy, just enough to be tipsy but not much farther from there. Nobody seemed to pay any attention to him, except for one person on the other side of the room. He couldn't make out their face, but he could see some shoulder-length blonde hair and a very revealing outfit. He could just make out a light pink crop top and booty shorts. However this girl was, she looked pretty, and she was staring intently at him. Mikey waved and stood up, carefully trying to navigate the disorienting dance floor.
Mike casually strolled over, or as casually as one can when they have a sausage the size of a yard stick poking down one leg. As he got closer, he saw more of this secret admirer. He saw a smooth midriff that lead down to a plump backside, and what looked to him like a perfectly sculpted heart shaped ass underneath a slutty pair of booty shorts. He felt his member hardening almost instantly suddenly he felt love (lust) at first sight.
"Hey cutey," he said trying so very hard to not sound drunk, "having fun?"
The cute girl giggled, with a slightly fuller voice than Mike was expecting. "I'm Jesse, and I think you're the cute one." After looking her over, Mike realized in that moment that he was not talking to a cute girl, but a cute femboy. He felt compelled in the back of his mind to leave, but he kept glancing at her ass. Her perfect, perfect ass. With his newfound sex drive, Mikey's mind completely skated past that realization and focused only on sex.
Again Mike felt trapped in a lucid state. He could feel his actions as they happened, but he could not think straight. He felt like a passive observer as he continued talking to Jesse and eventually pulled her closer by her waist. He could see her surprise as she brushed against his leg, and his extra member, before they both rushed away from the dancefloor and upstairs. Mikey and Jesse passed through multiple couples making out in the hallway, hand constantly planted on Jesse's bubble butt. Now knowing her more, intimately, Mikey assumed that Jesse went to the gym only to grow their ass.
Mike and Jesse find an unused room and rush inside, locking the door before Mikey presses his prey against the frame. Jesse's lips taste more delicious than any mouth Mikey has kissed before. One hand wanders up and down her slim, yet surprisingly curvy, frame while the other slides between her shorts and bubble butt. Jesse moans into Mikey's mouth before breaking his hold. Jesse then slides down to his crotch and kisses his bulge. Jesse lets out a shocking gasp as she starts at the base and moves down his pant leg. She is completely surprised as her lips keep moving down to his knee. They both shimmy back towards the bed while wrestling with Mikey's belt and zipper.
Mike falls backwards onto the squeaky mattress as Jesse pops open his pants and pulls out his snake. She takes a moments to process his monstrous size before kissing the large purple head. With one free hand, she pulls down her own shorts and starts jacking her own, pathetically small, 3 inch penis. Mikey feels a swarm of hormones too powerful to ignore and pulls Jesse in close for a messy French kiss. He takes his cock and slaps against her waiting, smooth, ass.
Jesse moans before moving her perfect bubble butt over Mike's impossibly long cock and pushes her gaping hole into his cock head. With a little fighting, and lots of resistance, the first few inches slide into her waiting ass. And like some kind of horny magic trick, Jesse pushes more and more of Mike's powerful cock into her ass. Mike watches as her body creeps closer and closer to his own and her stomach bulges out with his own member. Jesse's cock also stands to attention, pointed directly at Mike's head. Jesse then begins to bounce, slowly at first but then quickly picking up speed, as her slim body absorbs as much of Mike's cock into itself as it can. Mikey has never felt this kind of pleasure before, not with any girls he ever fucked. Jesse is practically screaming and gasping for air with each thrust, but she does not stop for even a moment.
A wonderfully lusty ten minutes pass but feel like hours. Mike's lucid state suddenly snaps to attention as he feels hot pressure build in his monstrous balls. He was about to cum the largest cum load of his life. He grabs Jesse's soft plump legs and moans an almost animalistic cry as he suddenly climaxes. Jesse feels his warm goo in her abdomen as she also cums, spraying a totally normal cum shot onto Mikey's chest. He feels his cock still spraying like a firehose as his balls deflate slightly. Jesse's bulging stomach grows more as she flops over next to Mike.
Jesse's huge heart-shaped ass is now pointed into the air as it leaks a steady flow of Mike's manly juice. He watches as his footlong cock finally softens and falls onto his chest. For a moment, everything slows to a grinding halt.
Then, Jesse begins to moan into the mattress. Her once cute little voice suddenly deepens and echoes. Mike watches as her soft body begins to harden into pointed mounds along her back. Jesse's hair lengthens slightly as their back muscles push outward. Their exposed ass pushes out as well, but also hardens around the edges and their thighs begin to harden with newly developed muscles. Mikey can barely believe his eyes, then he remembers the warning message on his miracle drugs: "do not ejaculate into another human being while using Cum N' Gro." He guesses that this somehow transferred the medicine to Jesse, who went from a soft sissy build to a jock body almost instantly. Before he can do anything about it, Mike notices that Jesse had fallen asleep, completely spent from their sex and their sudden growth. Mike gets up to retrieve his clothes and rush home, he needs to figure out what happened. But before he does, he takes another longing look at the most perfect bubble butt he had ever fucked, and opens the door.