The Gym

Note: This is a story-prompt for Smith Jim.

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Chris visited his local gym every day at different times, though he could never seem to catch the guy he had hooked up with in the locker rooms several weeks prior.

The guy had been a total twink. Slim, blonde, and very well-groomed. Chris had been shocked mid-way through their desperate gropes and kisses, when he had been spun around and pressed hard into the wall, to be dominated by said blondie.

And now Chris couldn’t get the man off his mind. His dick twitched just as the thought of him.

Lately, however, Chris had been doing nothing more than becoming a fucking slob. He had been consistently overeating, and unexpectedly was beginning to put on weight—and rapidly.

Gasping after only twenty minutes on the treadmill, Chris looked down at himself. His stomach had bloated and rounded, becoming a small belly, as though he had been guzzling beers in his spare time. His hips were softer and wider, his ass somewhat plumper in his gym sweats. Even his pecs had softened a good deal, and sometimes his nipples stung for some reason. Feeling disgusted with himself, Chris tore off his headphones and left.

Over the next several months, Chris continued to put on weight. He stopped frequenting the gym, too ashamed of what a fatass he had become. Appropriately enough, his weight surged and his appetite continued to balloon. When finally Chris found himself having difficulty just getting up from the couch, he realized that this couldn’t go on.

He hauled himself back to the gym, and did his best to ignore the stares, though secretly he was mortified by his round hips, bobbing bubble of an ass, his softened chest—fucking moobs—in fact so round and plump, his nipples were swollen and stung. The other day, they had even started to leak to his horror.

It was clearly a hormone imbalance brought on by the extreme weight gain. His cock had also grown thicker and longer—almost unnaturally large—and the most bizarre of his changes was his massively round belly which was plump and fat, but also a perfect ball, and completely dominated his torso, presently poking out from the bottom of his stretched T-shirt. Chris panted heavily as he waddled his way over to a treadmill, clutching the underside of his belly in an effort to support it.

His eyes widened at a sudden twinge in his gut. His dick began to harden rapidly. Alarmed, Chris changed course and made his way to the locker rooms.

He squeezed into way into a shower stall, wary of the stares of the three or so fit, muscled men occupying the locker room. Leaning on the wall, Chris panted heavily. His belly shuddered, tightened, and tensed. Something was wrong with him. Chris pulled up his shirt and rubbed his hands over the mound. It tensed again, and he released a choked gasp.

He was harder than he had ever been in his life, almost to the point of pain. He pushed down his sweatpants, allowing his cock to pop free. He couldn’t see it, but he could feel how massive it felt, as it throbbed, and strained, and grew. Chris grunted out.

He exploded, something spraying out of him and against the wall. But it wasn’t normal, it was heavy, and painful, and strenuous, causing his dick to fatten more, and strain, and distort. And it wouldn’t stop. Chris whimpered, his knees shuddering as he was pumped relentlessly by some invisible force.

Something slimy was squirming by the shower drain. Chris slowly looked down and was shocked to see a growing mound of something—a larvae?—something that resembled slugs.