Dean: Hey Cas, knock knock
Castiel: I don't understand, Dean. Why are
Dean: It's a joke, Cas. Just go with it
Castiel: Oh I get it now. You're pretending to
knock on a phone.
Dean: That's not the joke, Cas! I haven't
gotten to the joke yet!
Dean: You're supposed to say who's there
Castiel: Why would I ask that? There isn't an
actual door here.
Dean: PRETEND THERE'S A DOOR
Dean: YOU'RE INSIDE
Dean: AND I‘M OUTSIDE
Dean: I‘M KNOCKING AT THE DOOR
Castiel: You don't have to capitalize your
letters, Dean. I can read just fine.
Dean: Can we just try this again?
Castiel: Yes, Dean.
Dean: Okay great
Dean: Knock knock
Castiel: Come in, Dean.