look up any word, like turnt:
 
1.
A strong odour coming from one's behind.
Trevor just let out a huge butt funk
by Bob Sachet April 18, 2006
 
2.
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
 
3.
the unpleasant aroma that eminates from the crack of an unwashed buttock
bitch you need to wash that buttfunk from yo ass!!!
by crazy68 August 31, 2009
 
4.
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