A quote made famous for its use in season
1 of
Supernatural. Implies that the driver of a vehicle chooses what
music they and the passengers will listen to while whoever is riding shotgun must stay quiet.
Sam: You gotta update your
music collection. Black Sabbath? Motorhead? Metallica? It's the greatest hits of mullet
rock.
Dean: Well, house rules Sammy. Driver picks the
music, shotgun shuts his cakehole