Penny: You know, maybe it won't be that bad. Leonard says it's really mainstream now. Comic books aren't just for sad nerds anymore. (Penny drives past Raj, dressed as Aquaman, twirling a sign for Stuart's comic book store) I mean, it is still a key part of their demographic.

Sheldon: Woman, you are playing with forces beyond your ken.
Penny: Yeah, well your Ken can kiss my Barbie.

Leonard: What am I supposed to do?
Penny: Err, keep your mouth off other women.

Leonard: If I take it off, Sheldon wins.
Penny: Sweetie, every night you don't kill him in his sleep, he wins.

Penny: So, do you want to come?
Amy: No, thanks. I already live in a place all the nerds come to.

Raj: Oh, Double Stuf Oreos, I remember when I could afford you.

Sheldon: He also has a remarkable amount of credit card debt.
Howard: I thought your dad paid your cards.
Raj: I have a card for emergencies that I pay for myself.
Sheldon: What emergency happened at the L.A. Zoo?
Raj: That's a penguin I sponsor. They're losing their homes to global warming, and my car gets, like, seven miles a gallon, so I felt bad.