“Bigger,” he groaned, as he pulled the several-ton weight to his chest in a bentover row. Muscles far bigger than his head fought for room on his back, swelling even larger. Fifty-inch biceps creaked as they added on pounds of pure beef, fed pure testosterone by veins thicker and meatier than a normal man’s cock.
He lowered the massive, punishing weight with agonizing slowness, then pulled it up again. His back, as broad as the front of a semi, flared even wider. Front to back, he was as thick as a normal man was tall – and yet he was nowhere near satisfied. “M-more …”
His own dick hung limp, thick as a man’s thigh, with the head approaching his ankles. With bent-over rows, it was a real liability: the minute it got even semi-chubbed, it would get in the way of the titanic weight. He had spewed gallons of his own cum into the gym’s showers not even ten minutes ago – but as the pleasure of his unstoppable growth overwhelmed him, it was beginning to harden again.
Finally he dropped the weight with a terrifying crash. He straightened up, turned, and lumbered to the cable machine to do pec flys – his stance spectacularly wide, to accommodate his hulking, barrel-thick thighs.
He set the machine to maximum weight on each side – the weight of a small car. He had surpassed the bench press about half an hour ago; his heaving, massive chest had grown large enough that pressing the weight brought it a very short distance indeed.
He took hold of the machine’s reinforced grips – and caught a look at himself in the mirror, about seven feet away. Pulsing traps wreathed his masculine handsome face, and those massive pecs obscured his view of his chin. Giant, writhing, armor-plated abs could stop a train. Those thighs could lift one.
His enormous dick began to rise, harden, and grow at the thought. It leaked precum like a hose. “More mass,” he moaned, obsessed.
He began to pull the cables across his body, blasting his mutant pecs – but he struggled. The machine creaked.
His pecs began to thicken visibly before his widening eyes, bursting with power, approaching the size of beanbag chairs. His whole body followed suit, broadening, thickening, hulking out as he watched.
He groaned with pleasure as the weight began to move with incremental slowness. He grit his teeth and brought his hands a mere inch closer together; fifty more pounds of solid muscle appeared on his frame. Sweat ran between foot-deep crevices between his abs. His cock stretched another foot larger, pulsing thicker and fuller than he’d ever seen it before. It pointed directly at the mirror now, like a cannon.
His body grew and grew and GREW as his cock lurched toward the mirror. The feet-wide head brushed the cool surface, and his mammoth body shuddered with pleasure – suddenly and dramatically gaining feet of width and breadth. He roared, and the weights submitted to his power: he brought his hands together with a groan of triumph, then pulled them apart with delectable slowness.
His cock grew and grew, pressing against the mirror like a battering ram. He brought his hips forward and its precum-slicked head slid against the mirror’s slick surface, climbing higher. He stared at his own reflection and lusted after its inhuman size as he moaned and grunted and performed another rep, with comparative ease this time. “God yeah. F-fuck. So BIG …”
His dick’s head climbed further up the mirror, pulsing and shuddering, and the precum left a lubricating trail. He humped his reflection madly, making frenzied love to an image of muscle and size and power, as he executed rep after rep with machine-like precision. He was a monster – a freak – a beast – a god – always growing – no limits –
He roared, and came hard. The first volley of superpowered jizz shattered the mirror on impact. He groaned and pounded out rep after rep as he came and came and came – squeezing out every last pound, every last inch of growth from the machine.
He finished, and released the weights with a clang that shook the building to its foundations. His cock, still hard, obscured much of his vision – but he knew he’d put on at least another ton of mass. He lifted redwood-thick arms in a flex, and his split biceps surged far higher than his fists.
“M-MORE …”