Walter and Peter in “Unfinished Business”

Walter

He's been shot in the head.

Peter

Is that a problem?

Walter

Yes, that's a problem. Of course, it's a problem! A bullet in the head would normally indicate significant brain trauma.

Peter

Well, it would also indicate that he's dead, but you didn't seem to have a problem with that.

Walter

This procedure's not like removing tonsils.

Peter

I've never had a conversation with a dead guy before. Forgive me if I don't know the rules.