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1 definition by Braintrust

 
1.
An uncle with a slim top shelf, bottomed out with an enormously awesome apple bottom with a well defined sphinkter. Mostly noticed when leaning over a countertop, bar or tabletop.
Stop the presses! Jeff, why didn't you tell me you had a badunkauncle in your family. Don't let me forget to sniff his chair when he gets up.
by Braintrust March 22, 2008