slumper
n.— «A Linden police officer was dispatched to the back parking lot of a bar on North Bridge Street in reference to a “slumper,” according to Police Chief Pete VanDriessche. The police chief said a slumper is someone who has passed out from drinking, in his or her car.» —“Police & Fire Beat – 10/12/08″ Tri-County Times (Fenton, Michigan) Oct. 12, 2008. (source: Double-Tongued Dictionary)