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Term used to describe one’s foul odor emitting from the anus. Also used to describe other foul odors not necessarily relative to the butt.

Stan reeks of butt funk because he's dirty.
by Dominic5160 April 14, 2006
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3
A word originally created by siLus in 2003; word with many creative uses.
That kid is such a buttfunk; they buttfunked her to death.
by slugleet March 21, 2007
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