Doug was the kind of guy that always bullied in school. Short, thin, nerdy, with curly, ginger hair and a pair of thick glasses.
The social isolation pushed him towards intense studying, which made him the most scientifically talented student in the country, winning the most prestigious awards thanks to his inventions. Journalists often said, that he might be new Einstein, changing the whole world.
And that's exactly what Codiee needed. She knew he spent most of the time in shed near his house, which in fact led into spacious basement. She entered his yard and tried to enter the shed. It was locked, so she quickly picked it with her hair pin and without any further announcements went down the stairs.
Every possible place was filled with some weird electronics, chemistry or scientific books, even along the stairs, and down there were countless shelves with similar contents. The room was dark, only lit near the workbench, where boy currently constructed something.
Codiee remained half-hidden behind one of the shelves, observing nerd's work.
He was tinkering in the machine that looked like floor lamp, except with metal rod on the top. He closed some panel, put away his tools and moved away, to look at his work.
"Yes, that should work... at least for now. Sadly, effects are still only temporary. Well, but that needs testing right now!" and he undressed.
Codiee smirked silently at the sight of short, skinny like a pole Doug. And his genitals? A joke indeed!
But when he grabbed a remote from the table and pushed some buttons, the "lamp" shoot him with bright ray.
And he grew.
He shot in height, from his initial little-less-than-five-feet to little-less-than-seven-feet. His muscles expanded, making him more buff than any bodybuilder ever. And lastly his almost nonexistent cock swelled to his knees, as thick as his whole body previously was, with balls in size of basketballs.
Formerly frail boy, now hulking man, looked into mirror at his reflection and flexed. His penis hardened and stood up.
"Yes, that's it. They won't laugh at me ever again when I'll make this change permanent. I'll effortlessly beat the crap out of all guys and fuck the brains out of all the bitches like Stacy." he stroked his mighty cock.
"Eh, I wish Codiee could see me like this..." he sighed.
"Oh, she can see you well enough, big boy." Codiee left her hideout.
Doug, even though he could wrestle a bear and win, jumped like a cat and tried to hide his... manhood with his lab coat, but it wasn't enough at all.
"Wha... wh... I thought I locked the door... why are you here, Codiee?"
"I came here for you, and I see that I did it in best time. I see you finally have the right 'equipment', Dougie-boy" she slid her hand along his cock.
He almost came. Some precum dripped on the floor. "So he's still the same puny boy inside that hunky body. Shame, I'd fuck that" she thought to herself.
Still stroking him, she pouted "You know, but that additional leg of yours wouldn't fit in me. Do you have any growth solutions I could use? Pwease show me!"
He looked away "I... can't show..."
That pissed her of. She tightened her grip around his shaft and pulled firmly. He groaned with pain, and bent in half. The girl hissed in his ear.
"Listen to me, a girl wants to have her way with you and you refuse? Do you want to stay virgin your whole life, idiot?"
He got red on his whole face and muttered "Well no, no... alright, I'll show you everything, but you must keep these in secret!"
She tightened her grip even more. He groaned again. "I'll do whatever the fuck I want, and you'll do whatever the fuck I want too!" she answered.
"Ahh... let... me go... I'll show you everything!" and she released him.
She crossed her arms as she watched giant rummaging in his stuff. "He could have his way with me right here right now, then shrink and nobody would believe me if I said he fucked be, but he doesn't have any balls" she thought, then she looked at his crotch "Well, no metaphorical balls at least"
After some time and few more orders from the girl, the boy presented her some of his inventions. It was a big jar of pills, an autoinjector and the lamp-thing from before.
"This" he pointed at the jar "are growth-hormone based Size Pills. They do work miracles, but very unpredictably. They can grow you to giant size for a few minutes or just barely increase size of random part of your body, but permanently. In case of emergency, I put inside smaller container with "Reset Pills", that will negate all effects of the other ones."
He grabbed tiny injector "This is Leech Formula. I discovered it accidentally. It's based on some quantum mechanics and chemistry... well, nevermind. The organism, after being injected with it, will steal body mass from other one of the same species after contacting its body fluids. This is improved version, so the leech will gain more mass than it took from source. Oh, and the more intimate the contact was, the more size will be transferred."
Codiee smirked "So, you fucked a girl to prove that it works?"
Doug blushed "Well... no, but it worked on mice." then murmured something.
"Yeah, and I think I was how this works" Codiee patted lamp, not paying attention to nerd.
Doug stopped murmuring
"Pretty much, but there's one thing..." but before his answer, he gasped loudly and arched his back.
Then he came, his cum shooting in large quantity, creating a white trace to the shelf on the opposite side of the room. And as the fluid went out and out of his body, he shrank until he was in his old, pitiful form.
He breathed heavily and struggled for breath.
"It's only temporary transformation, and orgasm always ends it."
"Can you extend the change time? Also, make it more handy."
"Yeah, I can... but why are you even asking me all of this?"
Codiee smiled wickedly.
What does she pick?