In this clip from the Supernatural season four finale, "Lucifer Rising," Zachariah (Kurt Fuller) and Castiel come to tell Dean what he needs to do to break the final seal.
Dean: I need you to take me to see Sam. Castiel: Why? Dean: There's something I have to talk to him about. Castiel: What's that? Dean: The BM I took this morning. What's it to you? Make it snappy.
Dean: I'm not sure if he's my brother any more. If he ever was. Bobby: You stupid stupid son of a bitch! Well boo hoo. I am so sorry your feelings are hurt... princess! Are you under the impression that family's supposed to make you feel good? Make you an apple pie, maybe? They're supposed to make you miserable! That's why they're family.
