Season 4, Episode 17
Sam and Dean wake up with another life where they're ordinary people who have never met.
Sam: Tech support. This is Sam Wesson. Did you try turning it off and back on?
Dean: You broke into their email accounts?
Sam: I used some skills I happen to have to satisfy my curiosity.
Dean: I just found the best site ever. Real, actual ghost hunters. Oh, these guys are genius. Check this out.
Ed: We learned this from those useless douche bags...
Harry: That we hate.
Ed: The Winchesters.
Dean: Where do we even get a gun?
Sam: A gun store?
Dean: Details are everything. You don't want to go fighting ghosts without any health insurance.
Dean: Wow, very creative.
Zachariah: You should see my decoupage.
Dean: Gross. No, thank you.
Dean: Angel or not, I will stab you in your face.