Amy: Ooh, you just chose champions. It's like we're re-enacting the ancient German practice of trial by combat.
Penny: It's also like when the Mountain fought the Red Viper in Game of Thrones.
Bernadette: Leonard makes you watch that, too?
Penny: No, I like that show. It's got dragons and people doing it.

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.

Amy: Have you made a decision about the TARDIS? I think I can sell it if we call it Big British Portapotty.

Sheldon: Play that funky music, white boy.
Leonard: I'm surprised you know that reference.
Sheldon: What reference?

Bernadette: Hey, Raj, if Howard can't keep the TARDIS, how great would it look at your place?
Raj: What?
Howard: Yeah, what?
Bernadette: I don't know much about Doctor Who, but if you were to put this right outside your front door and open up the back, it would be like your entire apartment is the inside of the TARDIS. Which is pretty cool because on the show, the inside of the TARDIS is bigger than the outside. But then again, I don't know much about Doctor Who.