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Your girlfriend Claudia is lovely, but an absolute nerd. A couple of years ago she convinced you to let her set up a lab in your garage, and ever since she’s spent hours in there every weekend working on a secret experiment. She tells you a little bit about it, but honestly? It’s all too scientific and complicated for you, so you tune it out. One day she comes in very excited by her latest discovery. Claudia tells you it’s some sort of growth potion – she’s tested it out on plants, and now she wants to try it yourself. It is a lurid green, and you protest that it might be dangerous. She waves a hand, dismissing your concerns – besides, great scientific leaps forward need a bit of bravery, right? She swallows it, and almost immediately the effects become apparent. She’s growing in front of your eyes, and her muscles start to swell and bulge. Her strength increases too, and she keeps being overcome by a desire for sex – which is a welcome change from her usual low libido, you think. She gets taller and taller, and hornier and hornier, finally ordering you to eat her pussy, which is now level with your head following her enormous and unstoppable growth…