Alexis

Sweat spattered and glistened as Alexis squeezed out her last curl.  Grotesque pulsating veins purpled her flesh and face as she roared, refusing to let her torn muscles release the massive weights.  Tears streamed from her eyes mixed with the sweat as she ratcheted it all the way up, driving the bar up into a wall of bicep muscle that blocked it from going beyond ninety degrees.  Runnels of sweat traced tree branch patterns of vein and striation along her chiseled flesh as she held it up, sputtering for almost a minute. The massive beast of volcanic muscle throbbed, then seemed to burst at the head with an extra peak stretching the skin near its breaking point. With equal intensity she then fought the weight from falling down, holding, holding, growling and gnashing her teeth as muscle bulged and raged beneath her skin, gaining inches as the weight lost them to gravity. She lowered it slowly, gently to the floor, letting it sink into the ground before releasing her grip. The amount of control it must have taken to keep several tons of weights from hitting the ground with a thud was insane.  The floor actually sunk slightly under that mass. Her muscles were deeply etched - you could thrust a knife between them and not reach the bottom, the veins like the roots of some primeval sequoia. The bar alone was monstrous, too wide for an ordinary person to wrap their fingers around and stretching to an absurd length to accommodate all the hundred pound weights piled on each side.  Before adding a single weight that bar of steel coated compressed lead weighed over 200 lbs.  Molded fingers and a profound bowing in the middle had become a permanent aspect of the bar due to her grueling workouts. The organization spared no expense, but even it's nearly limitless resources were barely enough to keep up with this woman. Today’s exercise left her entire body throbbing, but that final onslaught of bicep curls caused a saran wrap creaking through her skin as the pump added dozens of jagged, iron hard inches to her arms.  Staggering over to the mirror, her prize pumpkin sized calves and overhead dryer quads forcing her to go somewhat bowlegged, Alexis was an awesome sight.  Her short black hair was plastered to traps that folded out her ears and her exercise bra was stretched out by pectoral muscles that covered her face up to just below her cobalt blue eyes and thrust a good arms length from her chest. Her massive arms rested almost horizontally on her lats which extended almost to her wrist, her wide back pinching between the crease dividing her biceps and triceps.  Even relaxed on her lats, the sheer monumental girth of her vein crowded bicep beasts was ridiculous.  If she just rotated her shoulder, the bottom of her triceps belly extended to mid-thigh, and her bicep (completely un-flexed and even lying slightly on her forearms) towered at least four feet above her head.  "Mmmmm", she moaned, looking at her absurdly swollen body.  Her lips smacked behind her pecs as the monstrous muscles suddenly started jumping like a pair of mutant bulls on trampolines competing to see who could bounce the highest.  Her massive breasts flopped free, springing absurdly on her pecs, the nipples pointing to the ceiling and making the soft beach ball sized orbs look tiny compared to her freakishly huge chest muscles.  I had to wet my lips, they were going completely dry.  She was so pumped the top had almost no hope of staying on as the slightest movements made her chest go insane with rippling waves of undulating mass. God, those breasts looked scrumptious. She unhooked a bottle of protein and started gulping it down to feed her hungry musculature.  The slight bend of her arm made her biceps rise two extra feet, twitching like it craved more expansion, more ridiculous extremity.  Alexis was only a little over five feet tall, but as she guzzled the protein with an almost sexual pleasure, it became obvious that most of her muscles were considerably bigger than she was.

Shockingly, she let some of the chocolate run down her deep muscle cleavage, slosh along the alternating bread loafs of her abs, and funnel into the already wet cleft clenching between her obscenely massive legs.

"Oops".

Was that deliberate?

Watching from behind the two way mirror I was completely slack-jawed - most of the other observers who worked my shift were terrified, but I've had a raging hard on the entire time.

But this time, she met my eyes THROUGH THE GLASS with her own ice blue ones.

I couldn't look away.

"Mmmm, baby, time to . . . . ." with a quick twitch of her wrist a cluster of veins as thick as railroad tracks popped on top of a doubled bicep flex - with a fleshy groan they stretched up like twin beast now almost twice as tall as she was.  My god, a five foot tall woman with ten foot biceps - those fuckers were getting close to reaching the ceiling!

"Ohhhh, yeah! Just a little – BAM!” the ceiling burst as she somehow squeezed another three feet of mass from her flesh “FLEX! MFFF” Yeah!

The private gym had been designed to accommodate her, even with some leeway for how big she was expected to get.  But Alexis's muscular growth hadn't diminished as expected with time, instead, at least for now, she seemed to be adding more and more mass day by day, and this was the most pumped she had ever been.With little moans she pistons her bicep up and down, a mass of bestial flesh now easily the size of a jack-knifed moving van.

It was like she was fucking the ceiling.

She lets her long tongue languidly roll out of her lips, and runs it along her bicep, leaving a slick, wet streak of lust.  “Just a little” crinkling her nose and giggling “MORE!” You could hear a faint leathery stretch, but her biceps was hidden in the floor above her.

Still looking directly at me she says "Oh, I bet you wanna see".

It isn't even worth pretending at this point, so I just nodded.

Licking her lips she lowers herself to her knees and then sits on the floor.  It seemed like some demented magic trick - as she sat, slowly, exposing more and more of that insane muscular mass, until, when she was finally seated, you could just see a small space between the head of her bicep and the ragged hole she tore in the ceiling.  How expensive will that be to replace? She nuzzles her own bicep as a final head pops up on top as the whole thing swells and creaks as mound upon mutant mound of sweaty, swollen, grotesquely oversized muscle nearly splits her skin. Again, the hole is filled with engorged muscle that's probably damn near filling the attic above. She growls and moans, flexing and pumping that colossal abomination of meat and flesh, pulsing veins and engorged striations as thick as bridge cables as bits of plaster rain down from the ceiling, leaving wet white streaks caking her sweaty, monstrous flesh.

I swear my cock is going to split itself in two just looking at this - and her eyes never left mine. Most of the other observers lived in fear of this woman, but honestly, despite what she COULD do, that was pretty ridiculous.

Rationally, Alexis had never harmed anyone - one of the reasons they cleared her for the experiment was that she had an extremely stable and empathetic personality.  While the treatment did change her behavior a bit, it wasn't extreme - if anything it made her more....well - I used to suspect it made her a bit of an exhibitionist. Some of us were pretty sure she knew she was being observed and was starting to enjoy it - I guess at this point it isn't a suspicion anymore.

She curled a finger, gesturing for me.

"Don't worry, I can be very gentle". She crinkled her nose and giggled playfully.  Even with her hair cut short,  she had an undeniable femininity, with a heart shaped face, unusually big eyes and slight dimples when she smiled.

Cute, pretty, and sexy as hell!

Well, it's not like my cover wasn't blown and I wasn't likely to lose my job anyway.....so of course I stepped out and walked into the room.  She was still sitting on the floor, legs crossed like some busty muscle Buddha with her freakishly enormous biceps piercing the ceiling as casually as I might put my legs on a coffee table.

Alexis bit her lower lip - along the ceiling two long cracks were forming, spreading towards my direction.  The plaster erupted as she rotated her arms and swung down her now enormously engorged biceps and set them gently to each side of me. Jesus, they had to be a good twenty feet by now - she was able to reach me across the gym! Without getting up she could reach me just by flexing her muscles!  The air was thick with dust and plaster, white channels highlighting every deep vein and striation in her skin.

If she wanted me dead, there wasn't a damn thing I could do about it.

She crossed her gargantuan muscles slightly behind, first squeezing me slightly, like a hug, then, oddly, popping me forward with a slight push.

Dimples and a chuckle.

"Y'know you can touch them if you'd like".  With a sigh she arched her back, enormous pectoral muscles burying her head as she shimmied her breasts with a jiggle.

"You can touch anything....if you'd like".

Straightening her back, she pressed her shoulders together, slightly - pecs surged forward, like biscuits bursting out of a can, and my crotch was enveloped by soft breasts.  I gasped, feeling the pre-cum dribble in my pants.  Her nostrils flared for a second, and her cheeks reddened slightly - I think, I think she smelled it.

I started kissing and caressing everything around me - there was just SO much.  Muscles as hard and sculpted as sandstone mesas, covered with soft velvety skin flaking with plaster and powder, thick veins pulsing rhythmically.  By that point I nearly lost my mind, I was humping all that meat like a wild dog to the rhythm of her quickening pulse, sinking shoulder length into enormous breasts that were kneaded by a wall of rippling pectoral muscle behind them, surrounded by warm biceps walling me into a world of texture, soft moans, and goose-bumped flesh. Exploring her body was like delving into some undiscovered territory, living geology moving me around as it pleased, to see all the sights, feel all the hards and softs.  A nipple might tease my lips, and just as I stretch my neck for more my mouth finds cobblestone abs, the taste of a chocolate protein powder along the edges of each chiseled slab.  A giggle.  A sigh. Her legs spread wide  as all that muscle seemed to converge in oyster pink wetness, the scent of jasmine and sea-salt.  I'm not sure which of us got my pants off - I could swear they somehow just got ripped off by all the undulating muscle around me.  My cock was purple, swollen so much stretch marks ached - each nerve was ready to push itself through my skin. I hesitated even though I felt if I waited much longer I'd peel open like a banana.  I kissed the inside of her thigh, as I heard her sigh again...deeper, huskier this time "Please".

I plunged into a tight furnace, crushing pressure and heat combined with wet silk, her own fluids pooling around my cock, dripping down our legs.  As I erupted inside of her, I couldn't stop slamming myself in, trying to push deeper - feeling like I was squeezing my ass out of my dick, turning myself inside out and cumming myself into her body.

And her muscles went off like an all out nuclear war. Her toes curled with a deep, earth quaking moan, digging themselves into the floor as striations ripped open with more striations, insane blooming muscles upon muscles as mass multiplied at what should be an almost cancerous rate. Her lats exploded the walls, stretching through rooms and into the parking lot - I could see personnel running and dodging, desks and chairs being pushed over.  As she arched her back, she didn't merely make more holes in the ceiling, her pecs ripped the roof off,  doubling, then tripling themselves as the open air seemed to hiss with the sheer heat coming of them as steel beams, girders, and slabs of roof slid off of their rippling surfaces, her gob-smacking breasts quivering in gelatinous heaps over the creamy pectoral skyscrapers I wanted to soak with my raging lust.  More cum erupted from me, burning my eyes and turning my mouth to chalk - I didn't care, she was so fucking hot!  Muscles split inside me as I thrust faster and harder, almost vibrating with sheer monstrous desire as the sky shattered, windows cracking for miles as her biceps mushroomed like flesh volcanoes disgorging more volcanoes, turning almost fractal as the world was filled with the scent of her musk, the taste of her salty flesh, the burning heat between her thighs.

The world went black - I'm not sure if her body just exploded us out into void or I passed out from sheer pleasure, but at that moment EVERYTHING was no more.