While talking about the Branch Davidians/FBI Negotiations in Waco, Texas

Professor:	(About David Koresh) He actually thought he was a christ, and that he was opening the 7 seals. He believed he was breaking the seals and that he had unleashed the 4 Horsemen of the Apocalypse. Oh, what are they... does anyone know what the 4 Horsemen are?
Me:	War, Death, Pestilence? and something to do with eating? I can't remember, it's been a while since I watched Supernatural.
Girl in class:	Watched what?
Me:	Supernatural? They stopped the apocalypse in season 5
Everyone:	(blank stares)
Guy in back:	...I've seen that show