Amy: He's mad at you, too. He says you're the succubus who led his friend astray.
Penny: I don't know what succubus is, but it has "suck" in it so that can't be good.

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.

Sheldon: Careful, Amy. The friend of the enemy's girlfriend is my enemy.
Amy: Really?
Sheldon: You're either with me or against me.
Amy: You wanna take the bus to work?
Sheldon: Maybe there's a third option.

Amy: What does tweepodoc mean?
Sheldon: Elephant?
Amy: Lucky guess.

Leonard: Leonard: I didn't make it back. The ship sank. I'm in Hell.