"So you're telling me I just take the pill..." Jen asked, trying to get her head around what the terms of the game were.
"And you grow, yeah." James said, cutting her off before she could finish.
"But what do you mean, I grow? That's not possible. Grow how?"
James looked Jen up and down, smiling.
"Well I honestly don't know. You could get taller, you could get fatter, you could even get bustier." He was hard just thinking about it. Jen was a diminutive girl. At five foot tall exactly with not an ounce of fat on her. Her blonde hair complimented her blue eyes, and her slight frame held the muscle of a woman who worked out. How would the pill react to her?
"But to stop it I have to swallow your load?" She asked with an eyebrow raised.
James smirked again, a stroke of genius that he had installed into the pills.
"Yep, but trust me you'll be too distracted to think about that. The game is how much can you take before you have to..." James gestured to his crotch and noticed that Jen gasped a little as she noticed the size of his bulge. "The aim of the game is to see if you can last longer without finishing. If I release first you win my car."
"You let me play whenever I want. But I promise you'll be begging to play again anyway."
Jen considered, she didn't hate the idea of growing a bit taller, or of being more muscular. Plus half of her was convinced that it was all a ruse.
"Alright, deal." She said, offering out her hand. "Gimme the pill then."
James handed it over and without a moment's hesitation, Jen had downed it. James hardened as he watched Jen. Her mascara had made her blue eyes pop and she smiled in anticipation. Getting ready to laugh it all off as a joke. "Ok, well you've had your fun, I guess I fell for it hook line and sinker."
James just smirked as he watched the initial bead of sweat forming on Jen's brow. "I guess I'll be taking those keys no...ooooh".
She could feel something happening and was aware of her own heartbeat, hearing it in her ears.
Her breathing became rapid and shallow as she stuttered, struggling for words. She began to fan herself with her hand as she fidgeted in her clothes. "Ooh, that stuff has a kick." She cooed beathily.
Subtly, the sleeves of her blouse became tighter as she fanned herself. Jen wasn't yet aware that the pills had taken effect. She could feel a pressure in her crotch. Her vision blurred.
"Ooooo" was all she could muster as the legs of her jeans crept up her calf. Her thighs slowly creaking wider as a layer of muscle grew beneath her trousers. Her hair starting to elongate as she felt a new urge.
Her breathing sped up again as she moved closer to James, placing a hand on his crotch. "Get it out then stud. Whatever you've given me, I can't help it, but I'm aching."
James felt Jen's palm spreading with a pleasant friction as her hand grew bigger. He noticed her biceps had started to bulge and veins were popping up her forearm. Jen breathed in and cooed as she felt her chest swell and a rip appeared in her top.
She swallowed. Her calves growing in size. Double. Triple. They kept going. Her toes pressed against the top of her shoes. Bulging. Growing. Her thighs plumped. Her back spread outwards. Her voice dropped. "Fuck!"
A rip formed on her sleeve as her bicep and tricep urged to be free. She was getting massive. Then her jeans split as her ass ripened and surged out in a single movement. "Ohhhh Fuck!" she mustered as her legs pushed her body further from the ground.
Her blouse exploded open. Her tits spilling over the top of her cups. The strain on her bra strap audible. They surge forward again. The straps threatening to give way as it struggles to contain this Herculean back and chest.
Jen pulls James closer. Kisses him. James feels her tongue swell against his. Effortlessly with a single hand she pulls at his jeans. They come away, torn in half with no effort.
"I'm close, I'm close, I'm so close." She pushes James to the floor and he noticed now she's continuing to grow taller. Her stomach revealing muscles that weren't there before. Her shoes finally give way as her toes wiggle. Her calves are like diamonds her thighs thicker than James chest. She's becoming an Amazon.
She starts to grunt like an animal as she watches her prey's member surge in size. She was so wet. She just needed to...taste. She needed relief, she needed this to end. Seed. She needed his seed.
Her thoughts were interrupted as the back of her head collided with the ceiling. Her legs were now the width of the bedside tables that she manages to slide her pillow sized feet between each one and the bed frame. James felt a large hand engulf his back as without warning, lifting him to her mouth.
She felt muscles that she had never felt before and used them to contract around James' member. Massaging and contracting, giving him the most awesome sensation of his life as he was thrust in and out of the hot, shopping mouth that was now the size of an oven that Jen had developed. Her new muscular tongue enveloping his length completely. He felt the slippery yet forceful sensations and fought not to give in.
What was amazing was that despite this new wave of muscle and power, Jen's assets were plumper and her hips wider. With a scream of absolute pleasure her bra gave way finally as did her bottoms.
As Jim fought with the urge to release, Jen shot up again, destroying the room, her feet smashing through the walls either side as her new weight caused the floor beneath them to give way.
"FUUUUUUUUCCCCKKKK!" She screamed as a surge of milk shot out from her tits like an exploding volcano of cream. Jim, now victorious let himself explode, content of this new goddess that he had created.
As he considered how best to use this on demand giantess toy, he noticed the dynamic must be about to shift as he could swear his now limp dick wasn't three foot flaccid before he began this contest.
"Oh good, you're ready to play again!" Jen said as she leaned further back, and began to slide his now 5 foot member between her toes. "I want to see what this monster can do."
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