Penny: We had one of these growing up. I used to play all the time.
Raj: Oh yeah, I loved ping pong.
Penny: Oh, I meant beer pong.

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?

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

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

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.