Top definition
acronym for "knock it the fuck off", used when there's a n00b in the chat/forum who pisses you off. otherwise one may use KIO.
d00d: to me the SCAR is superior to the 416, firing tests in dusty environments proved it.
n00b: PENIS
d00d: KITFO moron
by Dawk Avengr December 26, 2008
Get the mug
Get a KITFO mug for your mate Manafort.