Leonard: Listen, I should warn you that maybe asking Amy out isn't a good idea.
Sheldon: Barry, a word?
Leonard: And now the crazy version of what I just said.
Sheldon: If you intend to pursue Amy, you leave me with no choice but to put a stop to it.
Barry Kripke: And how are you gonna do that?
Sheldon: By challenging you to a duel.
Barry Kripke: You've had one lesson. I'll destroy you.
Sheldon: That is why the duel will take place at high noon, three years from today. If you're worth your salt as an instructor, I should be ready by then.
Yeah, and be warned. I'm going to touch you all over.
Leonard: Wow, that was crazier than I thought.