As Ms. Heather looked over the beakers filled with three different colored liquids, "will you please explain these again to me Justin?" As Justin was excited that he finally had someone willing to test out his growth formula. "um, yeah, the blue is a mild growth, the yellow is medium, and I designed the red to be pretty potent and will produce huge amounts of muscle growth... er, well, in theory so far, and since you're the first test subject, I guess we will find out just how well and how potent one of these are and the amount of growth that will occur..." as Justin rambled on nervously about his science teacher Ms. Heather being his test subject.
Little did Justin know, but Ms. Heather harbored inner thoughts of transforming into a huge, hulking female bodybuilder. She had always dreamed of becoming a bodybuilder. It was her secret desire, so as she listened intently to Justin explain the different liquids and what they do, she didn't care as she had already made up her mind that she was going to consume the red formula. Just the thought of growing big and muscular turned her on, sending shivers down her spine as her mind raced with the thought of having the body she dreamed of for so long.
"You sure you want me to be your first test subject?" Ms. Heather said looking at Justin before grabbing the red beaker. "Yes, I think it's only appropriate that should this work, you are the first since you were so encouraging to me to create this formula" as Justin replied to his teacher.
Nervously grabbing the red beaker with excitement racing through her body and thinking of the potential that was just moments away, Ms. Heather slowly brought the beaker to her lips and began drinking the red formula.
At 25 years old, Ms. Heather was the youngest teacher in the science department. She stood at only 5'1" tall and was a thin woman, weighing only 100 lbs and had small B cup breasts. Dressed in a button down blouse and dress slacks, with her lab coat that was two sizes to big for her, Ms. Heather was your typical looking science nerd. And her glasses also made her look even more appropriate for her job.
As Justin watched Ms. Heather drink the red formula, his mind was racing as to what would happen and how long it would take, not to mention, if it would even work at all. Setting down the beaker, Ms. Heather looked at Justin and said "I wonder how long... long... it... it... will... will... t... t... t... taaakkee... take..." as Ms. Heather's voice trailed off and she doubled over in pain.
Worried, Justin made a mad dash around the lab table to help his teacher, who was shaking. But as Justin grabbed her to help support her, he could feel something happening to her, almost like her muscles were convulsing and her body was changing. As Justin held his teacher under her arms he could feel her body starting to swell, like it was growing, right in his hands.
Justin could feel Ms. Heather's skinny, soft arms growing, becoming thicker and harder by the second. And as Justin tried to hold on to Ms. Heather, her arms were becoming so big and muscular, he couldn't hold on any longer and backed away from his teacher.
Justin noticed that Ms. Heather's shaking and convulsing stopped, and she began standing up. As Justin observed Ms. Heather from the backside, he noticed she looked taller than before and a whole lot ... bigger! Justin watched in awe as Ms. Heather's lab coat, that was always two sizes too big, begin to fill out, then start to stretch across her swelling back.
Just then, Justin began hearing the sound of tearing fabric, as threads were losing the battle against Ms. Heather's swelling muscle mass. Watching in disbelief, Justin saw the back of her lab coat and blouse slowly begin ripping open as the clasp of her bra tore apart as well! Justin couldn't believe just how fast and how muscular Ms. Heather was becoming, as he watched thick muscle mass forming all over her back, up and down her spine and rippling outward, like huge muscular wings spreading and pushing against what was left of her lab coat and blouse.
Justin continued to watch in amazement as he heard the combination of tearing fabric and Ms. Heather sexily moaning and grunting as her body continued to transform right before his eyes. As Justin looked downward, he saw his teachers formerly skinny legs become so thick and massive, huge quads and glutes tore out of her pants, shredding seams and fabric with ease, followed by massive calves as her feet ripped out of her shoes.
Turning around to face Justin, Ms. Heather ripped open her blouse with ease as buttons flew across the room, as her growing tits were on full display and looked like they were packed full of rock hard solid muscle. Not done growing yet, Justin watched his teacher raise both of her arms and she flexed her biceps as they tore through the fabric of her sleeves!
As Justin just stood there staring and shock that his formula actually worked, Ms. Heather kept up her show, tearing off the remnants of her clothing and tossing the rags aside. Standing there with her hands on her hips and wearing only her thong panties, Justin just stared and surveyed her body. She looked unreal, and her physique was truly magnificent! Ms. Heather had probably grown a few inches taller, but every inch of her physique was now bulging with pounds and pounds of unreal muscle mass never seen on a woman before and she was bigger than any bodybuilder in existence. Every muscle on her unreal physique was ripped and shredded, striations and veins snaked all over every inch of Ms. Heather's hulked out body, with some of the biggest and most beautiful tits with the biggest and most impressive nipples Justin had ever seen riding on her enormous chest.
As Ms. Heather just stood there covered in sweat, her hulking, statuesque physique radiating power and strength never seen on a human being before, she brought her hands up to her face, and as she did this, she took off her glasses and tossed them to the floor and untied her ponytail, letting her beautiful mane of black hair cascade down her enormous back. Licking her lips, she looked at Justin and his raging cock that was pressing hard against the front of his pants. "I can tell you like what you see?" Ms. Heather said seductively to Justin as he just nodded his head in agreement as he watched his hulking teacher begin feeling up her huge muscles and unreal tits and nipples wwhile flexing and posing for her own admiration.
"mmm... you have no idea how sexy and powerful I feel Justin" as Ms. Heather said in an erotic voice, "I've dreamed of having a body like this my entire life..." as she continued..."and now... I'm the biggest... and most muscular..woman in the world... I need a man who is big enough... strong enough... and muscular enough... mmm... to satisfy a woman like me...."
Just then, Justin heard the timer on the lab table ding. Another batch of the red formula had just finished its formulation and was ready for consumption.
At the same time, there was a knock at the chemistry room door...
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