noun - a term of endearment, meaning (roughly) a friendly Bavarian fuck(er), originating in the Bavarian expression for a Bavarian ('Batzi'), and the quasi-homophonic Hochdeutsch (High German) expression for a fucker ('Bumser'); generally used to express irritation at some kind of behavior of a friendly Bavarian fucker ...
e.g., "Hey Batzi, is it time for a little Bumsi?" or "Batzi Bumsi proposed a night of Anglo-American footie at Andechser. The fare there is said to be batziscrumptious and bumsilicious."
by Shredward July 27, 2010