Stoner, pothead, or frequent cannabis-user; a high person, someone who is really baked (from having just completed a roadie).
Jeff (devil-eyed and reeking of dank): "Dude, where is your bathroom?"
Gas station attendant 1: "Down the hall on your left."
Gas station attendant 2: "Looks like we got ourselves a California Cruiser."
Gas station attendant 1: "YEAUP!"