Natalie, Aria and Riley do some sexy science

The school is holding a science competition and Natalie Porkman, Aria Skye and Riley Grey are competing to win $100! They get ready, dressing up as scientists, and get to work. They come up with a recipe to make a man have an erection for 4 hours. Does it really work? That's when a guy walks in and he wants to know more. Perhaps they'd like to test out their concoction on him? To be honest I would have a 4 hour erection without this stuff with these sexy girls around. So does it work? Perhaps! What I do know for sure is he gets to fuck these hotties.

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