You stand there, trunks tight on your skinny legs, getting angry at her. Shes definitely hot but you dont like her.
Inside, Dana has found the bottle. She sees theres nothing inside but seeing the monster on the label she begins to understand what the whole deal is. "I'll get fucked by that hulk whether he likes it or not" she thinks and slides her finger down to her pussy, which had already begun to get wet just by the smell of testosterone the little twerps other self left in the bathroom.
Outside you begin to hear her moans of pleasure and understand her game. You look down at your dick and through the trunks you can already see it begin to react. Its beginning to move like a snake uncoiling. You begin to feel that power surge through every part of your body and try to keep it together.
"Oooh yes," she yells inside, moaning. "I wish I had a big beastly dick right now!"
Its too much for you. You lean against the wall and already you see your hands thicken, your forearms explode with giant muscle...
Inside, Dana begins to hear the deep and rumbling grunts and growls at the other side of the door. It makes her even hornier so she begins to moan louder.
You've already grown to seven and a half feet tall and already there are at least five hundred extra pounds of muscle and bone on your body. You clench your giant hands and your fingers dig deep into the plaster walls like their butter. Your thighs have become the size of barrels but their still being covered by the trunks. You let out one giant roar.
Dana looks as the door is suddenly snapped off from its frame and doesn't know whether she should feel scared or not...what she sees turns her on too much. The little twerp has become a monster the size of the increidble hulk, and maybe even bigger. He looks at her with the eyes of a hungry animal.
You walk into the bathroom once more crushing the doorframe with your shoulders. Your much bigger than you were the night before. You grow according to how horny you are and you know that if you dont take care of the giant erection youll outgrow the house.
She looks at your python cock and licks her lips with a hungry smile...