Chapter 2 - David's Humiliation
Staci sobbed in her room. David had called her fat at dinner - granted, she knew she was alittle bit thick, but 'chubby'? The truth was that Staci practically worshipped david - he was popular at school, a football jock, and always hung out with the best crowd and the cutest girls at school. She sought his approval of her gymnastics, but he always just mocked it, saying therewas nothing to overrated dance as he called it. The fat comment had just been too much.
Staci decided she was going to call it an early night, probably cry herself to sleep. She prepared a glass of cold water, and took the packet from Miller's and stirred it in. She had picked up Hydroxy-Cut, trying to shed a few of the unwanted pounds that hung from her strong, if slightly overweight, frame. She gulped the drink down, wanting the effects so badly as she sniffled, her eyes still welled with tears.
And then it happened. Seconds after swallowing the mixture, Staci's body began to tingle and tickle in a way it never had before. She got a little scared as it didn't stop, and then she went to her bed in a torrent of pain. Everywhere on her body it felt as if she were going to explode. Instantly, large swells of muscle began to fill up her tshirt weirdly, pumping and pistoning as her body grew in front of her eyes. Huge biceps swelled on her arms, and her chest ballooned with thick, steely muscles. Staci moaned as her stomach swelled outwards. Her hands instinctively went to her stomach for the pain, and she felt the swollen beach ball settle into ridged valleys and peaks of girl muscles. And then it was over.
Staci stood, her tshirt ripped in multiple places, and went to her mirror. The sight astounded her. Her tshirt, which she used as a nightshirt, was plastered to cartoon-like bulges of muscle. Was this really her body? Staci pinched herself to make sure it wasn't a dream. Her fingers could not find any loose skin to pinch herself with on her mountainous arms, so she guessed she was going to have to buy it. She struck an awkwards muscleman pose, a double biceps shot, and her tshirt immediately tattered from her swollen physique.
"Fat ...." she whispered, and began to giggle. Looking at her huge, uncovered muscles, all she could think of was punishing David. She was surely stronger than him, and she could hurt him now for how he had hurt her earlier. Moving quickly, excited, Staci rummaged through her drawers. She only had two 'sexy' pairs of lingerie - she had saved and saved to buy them secretly, against her parent's wishes, and finally found the tiny, black lace thong set and stretched them a little bit to accomadate her new growth. Her forearms rippled with swells of meat, scaring Stacey slightly with their unfamiliarity. Stacey pulled what had been slightly large at purchase over her rocky, lumped calves, and began to giggle when she realized she couldn't get them past he knees - her massive quads and leg biceps, unflexed, were more than the skimpy lingerie could handle. She stretched them out furhter, admiring her roped arm muscles as she put them to work. Even after minutes of hard stretching out, they looked almost non-existant on her newly extremely muscular young body - posing in the mirror, she giggled as she tensed her bulbous glutes, swallong the thong in two mounds of striated, thick muscles. She allowed herself only a few minutes of self admiration, just enough time to thoroughly amaze and disgust herself by her ungodly physique. But Stacey had work to do, enough self admiration, although her eyes strayed to watch herself in the mirror, in awe and lust of her own ridiculously developed new physique - she just hoped David could appreciate her new body, could understand what the difference in fat and muscle could make.
"Here I come, David," she giggled, putting her oversized bathrobe over her alarming, ripped to shreds physique to catch David off guard. She wanted him to see and fear her muscles and what they would do to him in short time. She tip toed down the hallway to her brother's door, and put her ear next to it. He must have been watching TV, for she heard voices from his room. Stacey grabbed the doorknob to ease it open, but found it was locked tight.
Irritated that she might miss her shot, Staci grabbed the doorknob and twisted hard. The locks immediately acquiesced to her strength, warping and popping in a second. She pushed the door open slowly, quietly, anticipating her revenge against her mean brother. She edged around the wall, and was astounded with what she saw.
David sat in his computer chair, which was jumping and jerking quickly and randomly. To his left, his large, flat screen was turned to face him, and on it Staci saw David's till then well-kept secret - on the screen was a huge, grotesquely muscled young girl, stark naked and hitting obscene, bloated Muscle Beach poses while a skinny, tall man hit her doggy style relentlessly from behind.
The girl's body looked unreal, pumping with hard swimming musculature and throbbing veins - she definitely had had some chemical help to accompany the thousands of pounds of weight tossed around in her nineteen years. Her face was gorgeous, soft with supermodel looks, and Staci guiltily heard the moans and groans of pleasure softly from the speakers of the television. Her pouting, cute face was shocking, unnatural atop the rumbling supergirl's physique that took up the majority of the camera lens - she was absolutely gigantic and looked carved from living marble. Her hair was a tipoff to her young age - it was tied back in pigtails with cute pink ribbons surrounding the tiny braids of brunette hair. Her tails only helped to accentuate her thickness, her difference, her body's utter indifference to any preconceived notions of femininity - they brushed by her amazing, brick-like trap muscles with each push from behind, and her amazing traps led to nothing but thick, hard bloated muscles in every available direction. It looked as if someone had cut and pasted a teen model's head atop a Mr. Olympia's physique, and then added tiny breasts as an afterthought. Stacey's eyes widened, while her brother's chair jerked faster, harder. The camera zoomed in on the girl's face, and she was now grunting and breathing hard, like a bull. Also like a bull, her thick, bulging neck, capped with rigid, tendon-striated sick bulges of trapezius muscle, was frightening in its size and vascularity.
Continuing to watch in morbid fascination, even Staci grew a bit excited by the combination of hard, gratifying sex and giant, female muscles. The camera zoomed in and out as the huge bodybuilderette arched her back, bringing her globes of muscle tits standing upright and rock solid. Staci's hand went to her mouth involuntairly as the woman groaned loudly, her stomach a giant mass of bubbly muscles, and began to play with her small nipples. Her chest trembled, muscles shifting, as she tweaked her erect, muscle backed breasts, and her mouth opened in a long groan of pleasue as she was getting filled from behind from the man who, relatively, looked like a stick. Staci finally unlocked her eyes from the disgusting sight, only to find her attention relocked onto her brother's large monitor.
On his computer screen, too, were muscle-girls - David's Media Player was spitting out high-red, short clips of women bodybuilders and super-muscular freaks that barely reached the most wide definition of femininity, their bodies swelling and rumbling with unnatural mountains and mounds of powerful muscles as they grunted, hefted tremendous poundages, licked their lips and posed sultrily, oiled and in the tiniest of bikinis always with a smile of deep, powerful satisfaction on their mostly beautiful young faces.
Staci gasped as David clicked the mouse, and the monitor showed a young, tanned girl, bursting with muscles, chained to a wall. It looked like a torture movie - through the speakers she could hear the musclebound teenager, grunting and moaning as she writhed against the clamps around her wrists and ankles. Her body bulged insanely as she continued thrashing, huge muscles straining and swelling like ocean waves as she strove vainly to snap the iron chains. Out of the corner of the screen loomed a man - he looked big and intensely strong, and Staci gasped again, louder this time still, as the man drove a punishing blow into the young girls stomach. Her thick stomach took the blow easily, but the man's next punch was to her face. Her head snapped backwards, and she wailed in pain. The man continued to beat the musclegirl savagely with surgical precision, eventually bringing in weapons like bats, dismantling the young bulging beauty's rigid defenses one by one. All this time, David's chair was jerking, and Staci was frozen, watching the video in rapt attention. Finally the camera panned out, and the teen musclegirl hung limp in the chains, her face bloody and her thick muscles covered with angry welts and purple bruises.As an even younger teen aged girl on the monitor curled in, cooing softly, and displayed pool rack, steel hard abs, Staci spoke.

"I'm not fat, David," she said softly, still shocked by the revelation of her brother's secret desires, and David gasped, the chair spinning. Staci's eyes grew especially wide as she saw her brothers' manhood, erect and rigid, in his hand. It was big, and lubed with hand lotion, as he had apparently been furiously masturbating to the onslaught of bulging, humungous female muscles that surrounded him.
"Wha... how did you... what," he shouted, scrambling for a shirt to cover himself with. With a t-shirt over his particularly tee-pee shaped lap and feeling utterly humiliated, he glared at Staci in her pink bathrobe. "If you tell ANYONE about this, Staci....." he began loudly. His words drew to a stop at Staci's movements. He did a double take as her caught a glijmpse of his little sister's lower leg - it looked as if she had gigantic, bursting calves for an instant, but then the hem of her bathrobe obscured the mound of meat from his view. He wrote it off to his being upset at being found out by not onlY anyone, but his own little sister.
Staci saw out of the corner of her eye the television now had a buxom, bursting redhead, muscles gigantic and most definitely steroid induced, inject herself with something apparently very painful, and physically grow in size as her prisoner, a skinny man of about 30, whimpered, watching the muscles which were to tear him apart grow in size and strength directly in front of his eyes. The previously impressive redhead swelled to gargantuan stength and size, her bikni flapping, strings cutting into the thick new meat, trying to make space for the girtj and thickness that accumulated like a faucet turned to high on her already built body. She watched, fascinated, as the now disgustingly muscled, veiny girl of what must have been seventeen years begin to punish him, ramming his tear stained face into her waffled, razor sharp defined stomach.
Staci untied her robe, and let the pink garment float down to her feet. "So you like muscles on girls, huh, David?" she cooed, and swung one hip coquetteishly. Her body was a ball of hard girl muscles, all big, striated, and swollen. Her slightest mopvement put all of the girls flashing by David's monitor to shame - her body metamorphosed with swells and waves of hard, rippling meat. Staci brought an arm up and flexed, hard, her bicep swelling enormously.
"What do you think about mine?" Staci taunted, continuing to show David an anatomy chart of muscles, all clearly defined, exploding from her joints like boulders. She hit a lat spread, dwarfing him, and her tiny bra stretched audibly, barely containing her flexed girth. Her back was a wide, curving triangle, increasing her width by nealy two feet. Her chest, usually and painfully obviously breastless, had gelled to form two stone hard globes of mass that treatened to overflow the cups of the tiny bra. Staci made them jump for David, whose mouth was still open an his eyes glazed as he watched his younger sister put on her muscle show. He noticed in a detatched way of disgust that his penis was hardening uncontrollably, and there was nothing he could do except tear his eyes from his disgustingly, unnaturally musclebound eighteen year old in front of him, taunting him with her mind blowing goddesses' physique.
David had never seen so much muscle packed onto a girl - Stace was only five foot two and must have weighed in at over 170 pounds! David's penis jerked as Staci awkwardly inflated her body, pumping her thick, unbelievably giant muscles into a veiny frenzy of unnatural angles and swells on her smallish frame. Staci concentrated, trying to remember poses, her huge girl muscles making her movements rigid and awkward. David's penis began to throb, hurting slightly, but still there was nothing he could do - the muscle just looked unnatural on her, massive and uncontrollably, disgustingly sexy.

After a few minutes of hard, strenuous posing, Staci's body was covered with veins and a sheen of sweat, and she saw the effect she was having on her older brother now. He was now sweating rivers to match her own, his face red as he gaped, jaw open, at her vigorous, muscle-blasting posing display - David's dick was huge, throbbing, and purple. Staci brought one bulging, glistening cannon of an arm down by David's hard-on, and flexed it. Staci's arm exploded, and a quirky bulge swelled as her thick, baseball sized bicep deformed the tight skin of her upper arm, struggling to gain size in its sausage-like confines. Her arm looked ready to burst as she pumped it, and thick snakelike veins crept along the pistoning ball of teen muscles. Staci stared at her own massive, rippling arm in a sharp contrast of horror and abhorrent self-admiration.
"Look David, we match," she continued, looking at her brother's hard on, covered in nearly as many veins as her musclebound, tense biceps muscles. David was trembling, in fear and intense lust of his grossly overmuscled young sister. Staci licked her pink lips sultrily, and ran her hand from her tiny, straining panties up her waffled stomach, slowly, feeling every ridge of her washboard midsection. She lovingly filled her hands with her bulging, steel cable tummy.

"Masturbate, David," Staci whispered, her voice low. "You know you've never seen muscles like these, and never will again - I am the strongest, biggest girl in the world!" Staci hit a side chest pose, her arms swelling, vein blasted, and trembling with her continual flexing. She cocked a shoulder just an inch or two, but the effect on her chest was tremendous - he breasts swelled, filling with blood as her muscles pumped larger and larger. Now her muscle tits did spill over the restraining cups, trembling slightly as the lines and cuts of her pecs changed continually with her expansion. David's hand began to glide along his shaft, almost against his will. With a girlish giggle and a flick of one wrist, Staci tore the tiny bra in two, and stood topless and hopelessly ultra mucular in front of her shaking brother.
"Yeah, look at my muscles, David - " Staci continued in her sexy whisper. "They're so ..." Staci flexed one huge biceps head, and caressed the nineteen inch stony mound with her small hand. "....ooooohhh," she sighed, her bicep fully flexed and roadmapped with thick, cable veins. "....big, and hard, David.... I'm sooo muscular and strong," she continued, running her hand down her thick arms to her pumped, bloated and bare chest, running the crevasse between the two striated, trembling, ultimately vascular globes of meat and running lightly down her bloated, muscle distended abdominal wall. Staci's nipples, proudly erect, were a small addition to the veiny, swollen, musclep0laden landscape she profferred to her brother shamelessly.
David's arm moved quicker, jerkily, as Staci's amazing musculature continued to grow and swell before his eyes. Staci's tree trunk thighs were flexed just standing, the cuts inches deep between the layers of her giant quads. "Aren't I the biggest little sister, David? Isn't my body huge, aren't my muscles just gigantic? Jerk off to my huge muscles, David - you know you can't help yourself, do it!"

"This is sick, Staci!" David exploded. "Stop it!" he continued as Staci slowly, sultrily licked her lips like the superteen on David's monitor and flexed her stomach. Her abs distended by inches, looking like a rack of cueballs, stretching her tiny panties across the rocky landscape of her lower abdominal wall.
"No, David," she whispered, spreading her lats wide like batwings, "What's sick is that you have a boner from your sister," David tried to stand, furious, and get out of the way of his hulking sister. He was so embarrassed by his uncontrollable, now painfully pumping manhood. Covering it, David shot to the left - Staci, however, moved incredibly quickly for her ballooned size, and cut him off. She flexed a huge biceps head as a warning, inches from his face, and David moaned and fell back in the chair. Staci brought her trembling, giant biceps down to his eye level - it eclipsed his head it was so big, a honeydew sized lump atop her arm.
"Please, Staci, it hurts so bad," he groaned, crying and pointing between his legs. "It's never been hard this long..... oooowwww....."
Staci stood inches from David, and glanced down at his cock. She took a small, coquettish step back, because the squared, bulging shelf of her chest topped by pointed, thimble sized nipples, blocked everything from view. Her brother was big, and rigid, and his penis jumped strangely every few seconds. She decided enough was enough, and went for the finisher.
"Watch this, big brother," she said gutterally, and faced him straight on. Her rounded, shiny stomach actually brushed his face with her breathing she was so close, and David gasped slightly, moaning, at the hot proximity of his super muscular sister.
She swung her arms backward, ballooning her wide back, and went into a earthshaking crab pose. Every muscle on her tiny, overextended frame exploded, and her neck was lost in thick trapezius muscles which reached her ears. She was scary, grotesquely huge and musclebound - David did not see one inch of her body that wasn't quivering with plates of teen meat.
"Staci...." David whined, "stop, please, I can't take anymore....owwwww..."
"Shut up," Staci said through gritted teeth. "There's nothing you can do to stop me," she huffed slightly, the continuous flex beginning to painfully lock up her throbbing, veined mounds of meat. "My muscles are getting bigger by the INSTANT" a mist came from her pink-lipped mouth as a grimace came across her face. David was trembling, his cock waving wildly in the air, and openly crying now. Fear, lust and disgust battled in his mind as his little, teenaged sister prolonged his tortuous erection by showing the most massive, unnatural, unbelievably HUGE muscles David had ever seen. Her body was armor plated, veins pulsed every inch of her tanned skin, rounded globes and mounds of muscle poking out all over Staci's physique. Her chest muscles were actually vibrating, and her arms were ridiculous - canteloupe sized bluges marked the interior, and her forearms were ropes of Popeye-like muscles.

As she continued to grow, muscles pumping, Staci began to whine uncontrollably. Tears ran from her eyes as she continued flexing for David, transforming her already formidable bodybuilder's physique from impressive to impossible. David's shocled, jaw agape face let Staci know that she was pulling him in multiple ways with her strong, supergirl's physique. She wanted to finish David, embarass and humiliate him by forcing him to cum, just from staring at her thick, powerful young body. She was turned on in a way she had never been before - her new muscles, packed on her body like football pads, gave her power, control, over men. Staci put every effort she could into pumping her ridiculously huge muscles into a rumbling fury of angular ledges and shelfs of meat - she was wet with the ideas of total muscular domination - and she planned to carry it out on her own brothrer.
Despite the growing, sharp pains of her ferocious flexing, she felt a warmth spread in her bikini bottoms. "Owwwww......ummmnhh...." Staci moaned erotically, and she could flex no more. Her entire body was rock solid, carved, striated, and exploding with muscles and large, prominently pumping veins. Before him, David had his fantasy fulfilled - just inches from his slackjawed face stood the biggest, strongest, most muscular girl he had ever seen - and he had seen a lot. His manhood throbbed painfully, waving in the air, hurting more and more with each passing second. David's shame at his painfully aroused state over his musclebound younger sister was forgotten at the sight of Staci, jaw clenched and neck muscles ready to rip through her taut skin, holding her last, massive, crab pose as her body vibrated, actually shook with the jiggling of her thick, hot and beefy muscle groups. He didn't think he could take any more, as Staci moaned one last time, biting her lip, veins springing outward on her pistoning melons of chest muscles.
David was screaming, and then it was all over. He sprayed cum for feet, splashing Staci's giant leg with his juices. It seemed he would never stop, Staci watched amazed, as more and more jism flew from between his legs. David shook all over, moaning and crying in utter lack of control and embarassment, as his pumping penis emptied itself in front of his amazingly developed 'little' sister. She looked down to see his juices dripping from her bulging, barrell thigh. It disgusted her, but was also satisfying in that strange way.
She had pumped every muscle in her body into unnatural, explosive swollen growth,, and she liked the way she looked right now - her body was bubble and bulge upon each other, thick, sweat slicked mountains of her muscles sliding under her paper thin skin. She loved the veins that spread like spiderwebs from her joints to feed the giant, engorged mounds of incredible girl meat that packed in on every inch of her young body. She, and her new bodybuilder's dream of a physique, had punished her brother - punished david for his 'fat' comments, and ironically enough, the thing he whacked off to daily had proven his demise. Her muscles had made a man ejaculate, no touching, just flexing their wonderous size and hardness. Staci relished the thought of using her muscles to dominate men, and maybe even worship her amazing teen muscles, while she pumped them into raging hardness and size.
Looking down, she saw David was shaking, his face red and eyes cast down in shame. "Lick it off, David," she said sweetly, and flexed her quad. Her leg swelled and ballooned, thick strips of thigh muscle overlapping and rippling. She laughed as David put his tongue to her gargantuan, granite thigh, withdrawing with a slight gag when, with the slightest of twitches, a thick vein appeared right under his tongue, finalzing his humiliation by cleaning her. She wondered with a giggle at the tickle of David's tongue against her granite quads what her Daddy would think about her new body .....