Penny: I grew up on a farm. From what I heard, they're either having sex or Howard's caught in a milking machine.

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.

Leonard: Well, the only way we can play teams at this point is if we cut Raj in half.
Raj: Oh, sure, cut the foreigner in half. There's a billion more where he came from.

Penny: Wait. Wait, Sheldon come back, you forgot something.
Sheldon: What?
Penny: This plasma grenade. Ha! Look, it's raining you!

Leonard: Wow, Penny, you're on fire!
Penny: Yeah, so is Sheldon!