Jack's Jockficiation

Story by Summercat on SoFurry

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A short little thing of muscle growth I wrote in a TF telegram chat. Some cleanup, not much.

Critique welcomed :3


Jack's mind spun as the thin otter fell back onto the couch, the vial dropping onto the carpet next to his shoes. Every thought became harder to process, memories becoming muddled as sharp mental explosions obliterated years of study and intellect, the otter's vocabulary shrinking as his eyes started to glaze over and become dim. His thick glasses started to move as his muzzle thickened and grew more square and sturdy, Jack's sight becoming blurry before the glasses fell off entirely and he had clear vision without them.

Memorized facts and figures melted away as his body began to swell, the folds of his shirt and pants pulling tight as his chest grew out, muscle tone building rapidly all over his body. The hem of his pants and the sleeves rode up higher as his limbs lengthened, before the sleeves caught on Jack's swelling biceps and started to strain. The hem of his shirt pulled out of his pants and crawled up his belly as his torso lengthened, revealing rapidly firming and thickening abs.

The otter groaned as his feet began to feel pinched, then squeezed. He gasped in release as a tearing of rubber announced the destruction of his shoes, his feet swelling thicker and larger. His hands spasmed as the palms stretched outward, fingers becoming thicker and less dexterous, calloused as if he had been doing sports.

Jack's shirt finally tore as his shoulders and back spread wider, ripping at the shoulders and the collar, exposing his thick pectorals and V shaped torso, his chest heaving with every breath. His neck thickened as his groans dropped one octave, then another.

The otter's rump swelled and spread larger, as did his tail, the growing mass tearing the seat of his pants and tailhole, and with a grunt Jack tore the rest of his pants off entirely revealing his strained briefs and growing bulge underneath.

Memories of playing sports and hitting the gym replaced hours of studying, a sports scholarship replacing his academics, and Jack growled in pleasure as his cock and balls surged larger again, bursting from his underwear. His thick member hovered above his belly and dripped pre onto his belly button. Some part of Jack still hesitated but could not stop his thick rough paws from pumping his meat.

Tail thrashing side to side in pleasure, the otter felt the last of his old life gather down deep within him, growing more and more comfortable with his new body even as it added more mass all over. His eyes squeezed closed, his toes curling in pleasure, a deep rumbling huffing filling the room as the massive jock otter grew a bit more before his large balls pulled up, and a wave of pleasure washed over him as the last remnants of his old life were blasted out of his cock onto his thick massive chest, the last bits of his old nerdy personality draining from him with every jet of seed and pulse of his member, until even the memory of having been once different was gone and all that was left of once a bright intelligent slim otter was a muscular and ripped gym-obsessed otter who was trying a new line of work, and had the presence of mind to look at the camera watching him jack off, grin, and flex.