"So Dennis, you want one?"
Claire casually glances his way while tipping the pill out onto her palm. Already leaning over like the answer is a foregone conclusion. Gina is practically vibrating with anticipation, thick thighs digging into the sides of his hip bones as his cock throbs rock-hard inside of her. A cascade of cost-benefit analysis tumbles through his head. What are the side effects? How does this work? Why is Claire such an accomplished chemist?
He can feel the answers right on the edge of memory, some half-formed link between life before the camera shutter clicked and whatever supercharged universe the errant picture sent him flying headlong into. Time, just a little time and the pieces would fall into place. And yet, the curiosity is about to eat him alive. The thought of what he's about to miss out on.
Oh, fuck it.
"Give it to me." He tips his mouth wide, and Claire drops the gel capsule onto his tongue. Gina leans forward and guides his jaw closed with a strong finger under the chin, and two sets of gorgeous blue eyes watch the motion as he swallows.
"The goal with this batch was shorter, and more intense. The last formulation had a half-life of 12 hours, and I got annoyed spending a whole day either stashed away at home or carefully hiding the fact that I was gaining a pound of muscle every hour. I switched to liquid and used a few other tricks to speed up absorption. This batch's half-life should be around two hours. So if my calculations are correct, it's going to be one hell of a ride between now and..."
Claire glances across the room to check the digital clock on the nightstand. It's just after one o'clock.
"Five pm."
"How long until we start to feel something?" Dennis asks.
"N-Now," Gina answer.
She's flushed, tilting her chin backward to relish an unseen feeling. "It c-comes on strong."
Claire presses a kiss to Gina's cheek, and a supportive hand behind her lower back. "It'll get stronger."
"G-good." Gina can scarcely form the word. "H-hot."
She leans forward, filling Dennis vision as she starts to pump hard and steady on his cock. One look at her face shows just how gone she is, pupils dilated.
"Damn, y-your right. M-much stronger." Claire slumps back on the bed. Her focus is fading too, replaced by a ruddy flush and dazed expression. A hand migrates unconsciously between her legs, and Dennis watches as she slips three fingers inside herself.
And then he too feel something spark off deep within him, building to a fire. An inferno lights right in his core, spreading outward from the stomach to all corners of his body. Every fiber throbs with pleasure for a moment, then relaxes. Then a moment later the sensation crashes back harder, blood rushing and pulse pounding in his ear.
"Holy fuck." Is all Dennis can manage to bite out between the waves of ecstasy. Gina bites the nape of his neck, animal and needy. His cock pulses with an entire heartbeat of blood, harder than ever. Every muscle feels strained to the limit, well past the point where he should feel crippling pain. But instead, there's only pleasure.
There's no chance of lasting long under these conditions, with an out of control Gina rolling and grinding and stroking him in a desperate search to ride herself over the edge. With his hands wound tight into the bed sheets, Dennis loses control. Swelling and bucking, his cock shoots thick ropes of cum deep inside Gina.
But unlike every other time, his cock doesn't soften. Not even slightly. And with the orgasm, comes another mind-wiping wave of pleasure. It eats away at every thought, until there's nothing left. Somewhere through the haze Dennis hears Gina give her own ecstatic cry of release, but it's so, so hard to focus through the desperate yearning fire burning through his every cell.
Reality and ecstasy meld together into an indeterminate haze. Moments of lucid clarity wash together with long missing stretches of incoherent bliss. Time loses meaning, and beautiful visions of buxom, growing blondes swim in and out of focus.
Sexy.
"Right there." Claire's bent over the edge of the bed, tree trunk thighs stance wide to allow Dennis to pound her from behind. Spread-legged across the sheets, Gina's head is slumped against the drywall, hands tangled in Claire's hair as the bigger girl buries herself deep between muscular thighs. Gina cups a pair of breasts that look different than the C-cups she was sporting before. There's no time to take real note before another orgasm is building, blood rushing into a cock that drives deeper into Claire with every thrust. Reality slips away again.
Strong.
One minute he's buried deep between a pair of muscular thighs, fervently rolling a clit between his teeth as strong lips suck hard on his cock. He can't tell if it's Claire or Gina, and has no particular ability to care. The lips slip lower, and Dennis sucks harder. He can feel the way his shaft stretches their jaw wide, teeth grazing the sensitive veins along his cock's underside. Another thump of his heart, and the shaft swells thicker. The teeth dig in a hair harder, fighting to accommodate him, and then the scene fades to static once more.
Pumped.
The next he's driving deep into Gina. She's laid out across the bed, breasts bouncing with every stroke, muscles swollen and pumped into stark relief. Looking up, he locks eyes with Claire, seated backwards on Gina's face and insistently rolling her hips. She sees him but looks right through at the same time, raising an arm into a self-indulgent double bicep flex. A mountain range forms, pumping and rolling as Claire strains to push the peak another half-inch higher. When she lets the flex go, the new superhuman size appears to stay.
Huge.
He's standing, hips pressed back against the edge of the bed. Twin soft breasts pump up and down along his shaft. The largest he's ever seen, fuller and rounder than Claire's were hours ago. A blonde head bobs, swirling a tongue across a round, meaty head to lap up the thin stream of pre-cum dripping like a leaky faucet from the tip. Everything is huge: His cock, the breasts, and especially the churning, crushing orgasm he can feel welling up in his balls. He shoots rope after rope into an eager mouth, and her throat works gamely to not let a single drop go un-swallowed.
Licking her lips and looking up with a wide smile as she presents him with a clean tongue, is Gina.
Unbelievable.
Dennis wakes to the sun cutting through the blinds, groggy and fighting through the vestiges of sleep. It's past seven, as he strains to catch a glimpse of the time around the heavy body pinning him to the bed. Five hours... Every fiber of his body is wrung out, sore, and starving. Ravenous in a way he hasn't been since 16, desperately hunting for calories in the family pantry to fuel a growth spurt that packed on five inches of height in six months.
His stomach rumbles, and the mop of blonde hair on his chest stirs.
"Fuck I'm sore," Gina groans.
She sits up, straddling Dennis' chest, and takes inventory. Arms stretch high, twisting and turning to loosen the kinks in her shoulders. The motion pumps boulder shoulder muscles up towards the ears, crowding for space with thick traps that swell up from her neck. Gina twists one way, then the other, and a thick wall of abdominal pops into relief.
Far, far bigger than before.
She cranks a flex, an excited smirk lighting up her face at the huge peak that forms. Gina kisses the muscle, and then brings both hands up to cup her chest. Her breasts underwent the most impressive growth of all. Ponderous, yet perky from their perch atop a thick shelf of pectoral muscle, they've grown from the previous modest size to a rack that would put grapefruits to shame. Sizing them up, weighing them in her hands, Gina stares at her new assets.
"Nice." She decides.
Then leaning forward, she tucks her head into the crook of his neck. "Looking like a stud, Dennis. Fucked me like one too."
There's a muffled, incoherent groan from somewhere over to the side. Claire's curled up, pressed tightly to Dennis side trapping and arm underneath her bulk in an attempt to hide from the window's light. A wall of muscle fills his view as she shuffles, half-asleep, to tuck her head deeper into the crook of Dennis' neck.
"Come on, big girl. You've had your nap." Dennis gently nudges her, drawing another groan in response.
"Five more minutes." Comes the half-mumbled response.
"Babe," Gina leans over far enough to kiss Claire on the cheek. "You have to look at yourself."
"I do?"
"Whether you do or don't, I'd like my arm back, before I starve to death." Dennis ducks in before Claire can hide her face again. He kisses her gently, in a soft circle around her mouth until Claire blinks enough sleep out of her eyes to roll off his arm and flat onto her back. Spread out, she fills the bed. Every single ounce of Claire is more. More than she was before. More than Gina. More than any other woman in history. With a groan of pure, unadulterated complaint, Claire uses the most muscular bicep Dennis has ever seen to block out the light a moment longer.
"I'm up." She says.
"Are you?" Dennis asks.
"Just..." Claire trails off. "Fuck. Wow. That was far more intense than the calculations indicated."
"Part of the scientific method," Gina says. "And part of having a fabulous mad scientist girlfriend."
"Not a mad scientist."
"Then what do you call the self-experimentation? Dosing two unsuspecting college students with untested drugs?"
"You two are not unsuspecting."
"But we did test drugs. Right Dennis?"
"I love the scientific method." Dennis says cupping a pec large enough to have its own gravity, and flexes it full and round just to prove the gargantuan muscle is in fact his own.
A stomach rumbles, not his this time.
"Feed me, or then you'll see a mad scientist," Claire says.
What happens next?
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