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A strong odour coming from one's behind.
Trevor just let out a huge butt funk
dodane przez Bob Sachet kwiecień 18, 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.
dodane przez Dominic5160 kwiecień 14, 2006
the unpleasant aroma that eminates from the crack of an unwashed buttock
bitch you need to wash that buttfunk from yo ass!!!
dodane przez crazy68 sierpień 31, 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.
dodane przez slugleet marzec 21, 2007