by OOOO February 24, 2008
noun; the crusty, dusty particles of leftover fecal matter that is left on or around the anus. Occurs when wiping was not adequate.
Dude, yesterday I shook some of my butt dust out in Britney's chocolate milk. She didn't notice a thing, other than a slight nutty taste!
by Mookiechaser July 30, 2009
Jeff farted and his butt got a little smokey afterwards. I said, "Damn dude, did you see that cloud of butt dust you just left on that little kid?"
by Jason January 15, 2004