Katie yelled out as Evie shot the gun at Amanda. Within seconds, Amanda started to grow taller, but not just taller, more muscular as well. Bodybuilder sized muscles swelled proportionally bigger than Katie’s used to be as Amanda’s height passed one foot tall. Amanda gasped at the feeling of strength pouring into her body.

“Oh, HELL yeah! You bitches want to see some REAL feats of strength? Just wait until I’m bigger! I’ll be tossing SUV’s around like Hot Wheels! I’ll punch mountains and watch them crumble before me! You ain’t seen nothing yet!”

Evie could hardly contain her excitement at the thought of Amanda becoming a bulging, super strong girl. She released the trigger, unsure of just how long to hold it down. Evie then turned the gun toward herself, rubbing the barrel against her crotch as Amanda reached 18 inches tall with muscles looking as big as a male bodybuilder, but were surging thousands of times stronger. Her legs bristled with heart shaped calves and bulging, detailed thighs. Her abs bristled with a seemingly impossible number of muscles. Her back widened and pushed out thicker with every passing second. Her chest stacked plates of dense muscles one on top of the next and grew wider, pressing out her breasts further as the striations raced across her pectorals and crept up her boobs. Her nipples shot erect as Amanda began to groan with pleasure. Her arms hung out away from her body, but her fists were tensed, blasted out wide forearms, large, round cannon ball biceps and thick detailed triceps.

Angela shook her head, trying to pull herself together only to watch with fascination at the growing, muscle bulging Amanda. She too seemed to enjoy the show, not wanting to stop it as she grew excited and began rubbing herself.

Katie backed up, trying hard to think of a way out of this. Those muscles should be hers! That super strength should be hers! She looked for the door, thinking that she would have to struggle to make it out the room. She glanced with disgust at Evie, pleasuring herself with the very gun that could give her back everything she wanted. And worst of all, she looked at Amanda, now nearing two feet tall and looking more muscular than any man alive!

Arnold lifted his head slowly, witnessing the rising figure of Amanda before him. Her muscles continued to swell and he quickly did some number crunching to ascertain her strength levels. His breath quickened at the thought. Thousands of times stronger than the average man? Hundreds of thousands of times stronger? He became dizzy, shaking with anticipation.

As Amanda’s height increase slowed, her muscle size crescendo as her body pulsed with seemingly impossible strength. Even though her height stopped at only two and half feet, her muscles were now huge, flowing impossibly around her small joints in a frenzy of size, separation and power. Bringing her right up arm, she flexed her incredibly powerful muscles and her bicep bulged up into a mountain of super strength. She also noticed that she had stopped growing and growled at Evie.

“Well that was a pretty good start Evie, but I’m still the size of a three year old. A super muscled three year old, but a three year old just the same. You need to shoot me again.”

Looking at Evie, who was now wide eyed and smiling, Amanda grunted at the sight of the gun between Evie’s thighs, the barrel wet from the apparent orgasms. Amanda glanced around the room at the still cowering Katie, the still stunned but now seemingly lust filled Angela and the too happy Arnold. Amanda now had more than enough strength to enact revenge on both Arnold and Katie. But first things first.

“Now Evie. I believe you were interested in my muscles and strength. One more shot and I’ll be tall enough to show you some super human tricks. Just look at how big my muscles are already. Just imagine what one more shot will do. How big I’ll become. How strong I’ll be. Aim and shoot Evie.”