Big Bang Theory Quote
Leonard: (Sheldon is singing "L'Chaim" at Penny's bar) I can't believe it! What got into him?
Penny: Oh, maybe a couple of virgin Cuba Libres that turned out to be kinda slutty.
Leonard: You didn't.
Penny: Hey, you do your experiments, I do mine.
Quote from S01E08 - The Grasshopper Experiment