[Sheldon is singing "L'Chaim" at Penny's bar]
Leonard: I don't believe it. What's gotten into him?
Penny: [holding up a bottle of Bacardi] Oh, a couple of virgin Cuba Libres who turned out to be kinda slutty.
Leonard: [excited] You didn't!?
Penny: Hey, you do your little experiments, I do mine.
Leonard: I don't believe it. What's gotten into him?
Penny: [holding up a bottle of Bacardi] Oh, a couple of virgin Cuba Libres who turned out to be kinda slutty.
Leonard: [excited] You didn't!?
Penny: Hey, you do your little experiments, I do mine.
[Sheldon is singing "L'Chaim" at Penny's bar]
Leonard : I don't believe it. What's gotten into him?
Penny : [holding up a bottle of Bacardi] Oh, a couple of virgin Cuba Libres who turned out to be kinda slutty.
Leonard : [excited] You didn't!?
Penny : Hey, you do your little experiments, I do mine.
http://www.tv-quotes.com/shows/the-big-bang-theory/quote_20823.html
