Leonard: I know I don't say it enough, but you go, girl.
Penny: That was enough.

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

Penny: At one point, they had me figure out how to get a banana out of a puzzle box.
Leonard: Wait, Sheldon gave me a banana in a box. He was testing me, too.
Penny: Unbelievable.
Leonard: And how could a chimp even solve that? That was impossible.
Penny: Really? You couldn't get it out?

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

Stuart: Listen to this. I-I was ringing up a customer, and I heard someone say, "Hey, there's a line," and I looked, and there was.

Stuart: Oh, look at that. Neil Gaiman tweeted about my store!
Howard: What did he say? Uh, "Next time you're in Pasadena, check out The Comic Center. Great vibe, old school, the owner really knows his stuff." Isn't that amazing?
Sheldon: Well, uh, it's no Sandman, but I guess we can't expect everything he writes to be a masterpiece.

Sheldon: Can you see Mercury? Can you see it?
Raj: One second.
Amy: You know, the Greek version of Mercury, Hermes, was worshipped in Athens by the carving of giant wooden phalluses.
Sheldon: Please, Amy, get your mind out of the ancient Athenian gutter.