Marcy had a crush on Dennis from years ago while he was still in high school. But she was too shy to admit it. Dennis always wanted to catch a glimpse of Marcy when she came over to visit Sarah, thinking she was quite pretty, but didn’t want to have to deal with his sister. Marcy was indeed very pretty, and while she dated around, as she grew older, high school boys didn’t hold her interest. What she really wanted was a college boy. At 5 foot 3 and average curves, she really didn’t stand out, body wise. But her silky dark hair and deep blue eyes made her the envy of many girls.
But once Dennis took the first picture, everything changed. In Dennis’s fantasy, Sarah (and by association) Marcy, had been lifted weights for the last two years, building up fantastic muscular bodies. Sarah and Marcy had pushed each other and while their muscles scared and confused many in the high school, their beauty and confidence made up for it. Having worked out with a vengeance all summer, their results were spectacular.
Immediately after taking that first picture, Dennis focused on Marcy, staring at her smooth bare legs, covered only with the bottom of her tight athletic shorts. Looking down, Dennis’s eyes followed her incredible curves as he slowly looked up. Small feet moved into diamond shaped 14 inch calves and sweeping, detailed rippling thighs. Her narrow six pack abs were exposed below her blue athletic top that contained her C cup sized breasts enhanced by the thick pectorals below. And when she flexed her 15 inch bicep up for Dennis, everyone in the room knew that Dennis was clearly excited.
Dennis gulped as he pulled up the camera again. This was a fantasy come true. Marcy was coming on to him. And if wasn’t for Sarah, he would be feeling those magnificent biceps right now. As Marcy pulled up her other arm, seeming to know full well what pose would turn Dennis on the most, her biceps inflated on her short arm into twin cannon balls of muscle, full, strong and with the line of the bicep split outlined across her thin skin. She was also swaying her hips slightly and tensing her chest, pulling her breasts up a bit higher and bouncing her boobs.
As she smiled at him with seductive eyes, Dennis could only imagine her growing stronger and more muscular. Stronger than any man alive and then some. Muscles to surpass the biggest male bodybuilder. Huge muscles that he could feel, probe and caress. So when he snapped the picture, his thoughts became reality right in front of him as sure enough, Marcy’s muscles began expanding, pushing out in every direction across her body with huge, feminine sweeps, curves and powerful angles.
Those high end fitness legs morphed into huge slabs of defined, rock hard muscles. The beautiful full calves expanded out into massive heart shaped bulges easily 24 inches around! Thighs of a bull elephant pressed outward as all four quadriceps on each leg pushed out two feet wide, sweeping from her narrow knees out to seemingly impossible proportions with deep separation, steel girder hardness and pure fem-muscle power. Her glutes pushed out into twin ripped half bowling balls, pulling her athletic shorts up into a spandex Wonder Woman style bottom. The massive thighs curved incredibly up to narrow, cobblestone abs, bristling with deep separation and pounding with bullet proof hardness. The athletic top was cut to accentuate deep muscle cleavage with pectorals thicker than any man had ever flexed with steel hard boobs to match. Her wide, glorious back pushed out into a four foot wide set of lats bulging with bumps and grooves expanded beyond any other human on earth. And by the time he got to Marcy’s beautiful, smiling face his eyes about fell out of his head as those luscious biceps were being flexed to monumental proportions. From 15 inch cannonball, those mighty teen-age biceps blasted bigger, thicker, wider and higher, forming into a mountain of muscle with a cavernous split and throbbing, monster peaks. Each bicep was flexed up into a wall of muscle 10 inches from the bottom of her deep tricep belly to the top of her Herculean peak and 28 incredible inches around!
Dennis was shell shocked. Had he done this? As Marcy licked her lips seductively for Dennis, he was pulled back into reality when his sister stormed forward. While Dennis had focused on making Marcy bigger, he had unwittingly done the same for his sister, who was just as big, if not bigger, than Marcy!
Sarah slammed her body into Dennis and pushed him hard against the wall with a room shaking crunch. Dennis yelped out with pain and confusion.
“Listen here, pencil neck. You think you can just barge into MY room and take pictures of your wet dream girl? Have you forgotten just who the strongest fucking human on the planet is?”
Marcy placed her hands on her fists. “Hey!”
Sarah rolled her eyes. “OK, one of the two strongest humans on the planet. We kind of trade off now and again.”
As Marcy nodded her head while Sarah looked over at her, Dennis tried to work his way free and toward the door, only now becoming painfully aware of the reality he just created.
Sarah and Marcy had started lifting weights as junior high girls, just wanting to stay in shape for the summer before high school. But they soon discovered that their bodies reacted almost immediately to the weights. Competing against each other, they were soon lifting weights to challenge any boy in class. By sophomore year they nearly as strong and as muscular as the senior football players. By Junior year they were bigger, stronger and tougher than any boy in the whole state. And still they kept getting bigger and stronger, defying logic. Before the end of their Junior year they were challenging world records in every lifting category, regardless of weight class or gender. And over the summer, all records were theirs. They could out flex, out lift and out perform any man on earth! They were feared and respected by all, admire by many, and lusted after by a few, including Dennis. As Dennis inched toward the door, Sarah turned back toward him, her shorter, but much wider frame turning to challenge him. Fortunately for him, Marcy spoke up.
“Oh, just let him go Sarah. After all, what could he possibly do to us anyway? We’d crush him like a bug.”
Sarah smiled wickedly and turned back toward Dennis, pulling up her own arm and flexing a bicep even bigger than Marcy’s. 29 inches of towering girl power bulged across her narrow, feminine arm.
“You’re right. Hell, we’re practically bullet proof! We’re nearly twice as strong as the strongest man already and we’re growing stronger, harder and more muscular every day! Dennis here would break like a twig against these muscles.”
Dennis gulped as he backed his way toward the door as Sarah followed him closely. As he felt around and found the doorknob, Dennis glanced over at Marcy, who had her hand up to her face like a phone, mouthing, “Call me.”
His emotions torn and worrying what Sarah would do to him if she caught him with Marcy, he decided to make a quick exit and head to the basement to do his laundry. Slowly pulling the door behind him, he let out a labored breath and with confused thoughts, headed down stairs. The once cluttered basement was now filled with massive weights, bars, benches and pads. Pictures of Sarah and Marcy at different stages of development were plastered all over the walls and a large mirror was against the far wall. Gulping, he started stuffing the clothes into the washer, once again contemplating the power of the camera and the girl muscles he had wished for Marcy and Sarah.
Just as he turned the dial and was about to start the washer he heard footsteps on the stairs behind him and when he turned around he saw Marcy, smiling sweetly and gently flexing her pecs up and down.
“Hello Dennis. I’m glad I found you here. This means we’re finally alone.”
Dennis gulped. He was filled with desire and lust. And fear.
“Uh, where’s Sarah?”
Marcy held her smile as she sauntered closer to Dennis. “Oh, she’s still in her room. I told her I had to head home.”
Dennis started to sweat. “Um, OK. Is there, uh, something you need?”
Marcy giggled. “Well, I can think a few things. But I’m guessing you’d like a chance to get a closer look at these muscles, hmmmmm? Or maybe watch me lift some of these weights? You could take a few pictures at the same time.”
Dennis wanted every one of those things, but his eyes darted toward the ceiling. “Don’t you thing Sarah will find out?”
Marcy chuckled softly. “Maybe. But doesn’t that add to the excitement of it all? So what’s it going to be? You’re not turning down this opportunity are you?”
Dennis’s thoughts were now all on Marcy. This was a dream come true. There was no way he could turn this down. He also placed his hand on the camera. And maybe he could make Marcy stronger than Sarah to protect him too. He started imagining the feats of strength Marcy could perform for him. How he could probe her massive, steel hard muscles. In the back of mind he also thought about Sarah becoming as powerful, if not more so, but tried his best to push that away and think only of Marcdy. Letting out a breath he was holding, he nodded his head.
Marcy purred. “Good then. So what would you like to do first? Flex or lift? Each one will turn me on Dennis. Which one will turn you on? Or do you have something else in mind?
Biting his lower lip, Dennis squeaked out his response.
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