Your girlfriend convinces you to let her be a human experiment for a growth formula you are working on. You sneakily give her a super-concentrated dose which she greedily gulps down, nothing happens so you have to explain to her that the growth is triggered by orgasms. She gets you to help her play and grows, then she can't stop, she gets bigger and bigger and talks about all the things she can use to get off like trucks and buildings. She wants to absorb everything and become the universe....