Donnie Rock , a youthful beginner physicist, needs a guinea pig on which to test his most recent invention. He accepts he has made a mixture that will transform typical ordinary young ladies into seething whores. Thus, he spikes the ice tea and offers a glass to his virgin sister Tara Ashley . She takes a couple of tastes and low-and-observe, his elixir works! His sister turns out to be really horny. She can't handle herself and wipes one-out. Slamming her pussy with her fingers, she forces herself to peak. That is the point at which she sees her