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Noun: During a heavy night of drinking at a bar, the perpetrator thinks he needs to relieve himself and once he gets to the men's room he pukes into the urinal, leaving it for the next guy to view what appears to be "Urinal Oats"cereal.
Ed the bartender is not very happy that he needs to clean up the urinal oats left behind by Earl, the lightweight drunk.
by Abe Vichoada September 08, 2010