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by MossyA Author IconMail Icon
Rated: 18+ · Interactive · Action/Adventure · #2173117
High School nerd Justin has made a muscle growth formula, watch as the chaos unfolds.
This choice: She chugs the Red Vial  •  Go Back...
Chapter #5

She chugs the Red Vial

    by: MossyA Author IconMail Icon
Originally by Scriptboy Author IconMail Icon

Justin couldn’t believe what he was seeing with his own eyes. Here was this cute, young, bespectacled nerdy girl from his class, only sixteen years old, standing just 4-foot-10 inches tall, flexing her muscles before him as an athletic fashion model who was now standing 5-foot-6 inches tall following an amazing growth spurt, the same height as him! This was all thanks to Tammy drinking one of his vials!

“Wow! I’m the same height as YOU!” Tammy exclaimed, as she stood right before him and grinned from ear to ear. “And… I feel so big and STRONG! This is absolutely AMAZING! Thank you so much, Justin!”

Before Justin could even react, he felt two long, powerful arms wrap around his neck as this thick, muscular body flung itself on him, forcing him to take several steps back until he bumped into the side of the bed and fell with his back on the mattress while this big, heavy girl landed right on top of him!

“I love you!” Tammy smiled, kissing Justin on his lips and on his cheeks. “This is the best gift ever. All my life I’ve been bullied and made fun of for being small and weak and now you made me look like one of those gym girls who works out for hours and hours every day!”

“I… Uhh… I’m glad I could help, Tammy…” Justin replied shyly. It was hard for him to breathe since Tammy was on top of him. “Uhhh… You’re so… heavy…”

“Oh! I’m sorry, Justin! I need to get used to being bigger and having all this muscle! Oopsie!” Tammy smiled as she quickly slid off the bed and offered Justin her hand. Justin extended a hand and Tammy easily pulled him off the bed and back on his feet again. “Ta-da! That was easy!”

“It’s easy when you got all that muscle, huh?” Justin chuckled.

“I’ll say!” Tammy smiled, as she turned and looked at the small, plastic case on the table containing the other two, unopened vials. “Oh… You got more of your serum left, huh?”

Tammy walked over to her desk, and she picked up the plastic case. She just stood there, quietly looking at the unopened blue and red vials, neatly stored and surrounded by Styrofoam inside of the plastic, protective case.

“Are these vials also… Are they for me?” Tammy said quietly. “Or were you going to give them to someone else?”

Justin calmly walked over to the cute teen muscle girl. He rested his hands on her broad shoulders.

“I made this serum for you and only for you. You’re the most deserving person to receive this serum, which gives you muscle and height. I thought about this long and hard, Tammy. Nobody else in school deserves this more than you, after everything you’ve been through. I know you’ll stand up for your friends and defend them against the thugs and the bullies in school. I want you to have the test of the serum when you feel you’re ready!” Justin explained.

“But… Why do you want to see me become stronger? Why not some gym girl?” she asked him.

“Most of those girls are cocky and snobby. They only look after themselves. They will only make sure that they become more popular. You’re far more generous than that. You’re more mature and responsible. Plus… I like you. I think you deserve this.” Justin responded. “Personally, I would love to see you become even bigger and stronger. But I’m gonna leave that up to you.”

“Oh! So… You won’t mind it if I were to become bigger, taller and more muscular than I am right now?” Tammy asked him.

“Absolutely not! In fact, I’ll hug you and hold you while I’ll feel you grow. I love that. I can’t wait to see how big you’ll become! You’re grow into a true female bodybuilder!” Justin smiled.

Tammy calmly took the red vial out of the case.

“So, you don’t mind it if I drink this? Uhh… I bet it’s gonna taste awful, like the yellow stuff!” Tammy sighed.

“I’ll help you with that. Here, just give the vial to me!” Justin said.

Justin took the red vial, and he poured the contents into a large, plastic cup. Then he poured a big glass of milk the cup, stirring it together with a spoon before handing it back to her.

“Here! The serum is mixed with fresh milk! This might slow down the growth a little bit, but not by much. The taste will be much better, though. Drink it all down with one big gulp!” he said as he handed her the plastic cup which was filled with milk mixed in with the red serum.

The cute, teenage blonde girl then took the cup and closed her eyes as she gulped down the entire contents of the cup, drinking all the milk which was mixed in with the red serum before setting the empty cup down on her desk.

She stood still for a moment, gulping in some air as she caught her breath, before opening her mouth wide and letting out a loud burp. It thundered through the house like the roar of a lion!

BUUUUUUUUURRRPPP!

“Whoa! Excuse you!” Justin chuckled.

Tammy quickly covered her mouth with her hand in a moment of shyness as she stood there as the serum began to act upon her body, which was already muscular. Now, things were happening quickly as her body began to expand in even bigger ways!

Justin quickly walked up to her and he stood right in front of her, gently wrapping his arms around her as he pressed her changing, growing body against his own so he could feel her body go through the changes.

“Ohhh… Justin… I feel like…. Ohhhh… Urrrghhhh…. Whhaaaaaaahhh!!!” she moaned loudly as her legs suddenly exploded with muscle, growing even longer, thicker and wider than they already were. Her calves ballooned with huge mounds of incredible bulky muscle sticking out from the back of her legs like huge vein-covered soccer balls, becoming as hard as stone. Furthermore, her quads and hamstrings bulged from her legs, growing thicker, deeper and sideways until they were twice as wide as before. From her waist to her knees, her legs became so wide that they were forming a curved bulged on either side of her frame. Big, long cords of muscle were running from her waist to her knees. The additional inches made her stand taller as she reached a height of 6 feet!

Her legs were now pumped up with enough muscle to make her look like a track star from the Olympic games! Long and muscled, with thick calves, bulging hamstrings and large, wide quads. She now had the long, super-athletic legs which would make all the boys in high school drool over her!

“Ohhh, wowwww… Justin! Uhhhhh…” she continued to groan as her muscles kept on growing even more!

Moving up her body, her abdominal muscles, which were already impressive, now grew into a replica of a kitchen washboard filled with hills and valleys divided by deep, hard grooves in the skin of her lower torso. Her abdominal muscles consisted of four rows of two columns each of hard rocks, separated by small spaces between them. Her abs formed an armored shield which could take any punch, any kick or any blow from anyone!

Lastly, her entire upper body widened considerably as mighty lats supported her bulging broad shoulders, which surrounded her pecs which had her huge, firm D-cup breasts. She also sported thick, wide traps and delts surrounding her wide neck, finally ending with her big, long python-arms hanging from the sides. Those contained her thick, solid biceps and triceps, which, together on each arm, made her look like she had bowling balls implanted on each arm. All those arms were covered in deep veins as well! Truly, everything about her was an indication of true strength, might and power!

“Uhh… Ohhhhhhh!” she gasped, as she just stood there.

“I’m here, Tammy… Wow… That felt amazing!” Justin said quietly as he held on to her. This time, however, he had to look up to her. Tammy was now 6-foot-4 inches tall, and she was just like a professional female bodybuilder. In fact, her body had widened so much, that Justin’s arms could no longer reach all the way around her frame. “You look… Incredible!”

This time, Justin kissed Tammy on her cheek. It was as far as he could reach, since she was taller than him, now. But Justin didn’t mind. He just wanted to give Tammy the opportunity to catch her breath following the dramatic growth spurt while he thought about what he wanted to do next with his big muscle girl.
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