when some is slacking off or doing a bad job..
haha look at george being a slack nut no more weed for him it make him.. i think hes gay.... yeah look how hes fondaling mr.shanks over there..
by kksdjaj aas f a September 01, 2006
Moronic, stupid or slow witted, derived from the phrase "as slack as a bag of nuts"
That kid is a complete slacknut!
by Giggles595 June 25, 2010