Dean Winchester: Tell me who your favorite singer is.

Sam Winchester: What?

Dean Winchester: You... Look, I know you say it's Elvis, but we both know that's crap, so tell me who your favorite singer is.

Sam Winchester: Well, it's like you said. It's Celine Dion. Uh... I mean Celine Dion. It's Celi... Dean, every time I try and say "Elvis," it comes out...

Dean Winchester: The sad, horrible truth.