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A strong odour coming from one's behind.
Trevor just let out a huge butt funk
por Bob Sachet 18 de Abril de 2006
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.
por Dominic5160 14 de Abril de 2006
the unpleasant aroma that eminates from the crack of an unwashed buttock
bitch you need to wash that buttfunk from yo ass!!!
por crazy68 31 de Agosto de 2009
A word originally created by siLus in 2003; word with many creative uses.
That kid is such a buttfunk; they buttfunked her to death.
por slugleet 21 de Março de 2007