Top Definition
(n) buht-er-flahy-buht - An extremely well-defined male posterior which resembles a butterfly's wings
Person 1: I do say, that gentleman has a lovely buttocks.

Person 2: I concur, in fact I do say it is worthy of being called a butterfly butt.

Person 1: Mhmm yes.
by Douglbutt November 15, 2009
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