Penny: Okay, look, I Googled it. I took the picture, so it's my discovery. (scoffs) He stole my comet.
Leonard: I know, but on the other hand, do you really care?
Penny: Yes, I care. This happens to me all the time. People take one look at me and assume I don't know what I'm talking about.
Leonard: Oh, I'm sure that's not true.
Penny: I'm sorry. Are you saying I don't know what I'm talking about?
Leonard: No, I'm not saying anything, ever again.

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

Raj: [to Amy] If you were having Sheldon's baby, would you really want him in the room?
Penny: Yeah, if he's in the room when they're making the baby, I'll give you $10.

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

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.