Dean: Hmm... looks like there's only room for one. You want to flip a coin?
Sam: Dean, we have no idea what's down there.
Dean: All right. I'll go if you're scared. Scared?
Sam: Flip the damn coin!
Dean: Call it in the air, chicken.
Sam: (catches coin) I'm going.
Dean: I said I'd go.
Sam: I'm going. Don't drop me.