someone's buttocks after they have defecated but did not wipe themselves.
Yo, girl, you need to wipe yo' dookie buns an' shit, they be smellin' real nuggish! (See nuggish)
by De'Jaun Sumpter September 25, 2006
When a guy puts his hair in a bun and it resembles a pile of goat dookie.
Look at josues hair ,he is sporting a dookiebun
by richard1269 November 07, 2014