A strong odour coming from one's behind.
Trevor just let out a huge butt funk
ayon kay Bob Sachet ika-18 ng Abril, 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.
ayon kay Dominic5160 ika-14 ng Abril, 2006
A word originally created by siLus in 2003; word with many creative uses.
That kid is such a buttfunk; they buttfunked her to death.
ayon kay slugleet ika-21 ng Marso, 2007