Top Definition
kindly fuck off.
colleague: can i copy the homework?
person: kfo.
by pseudonympseudonympseudonyms November 21, 2010
Knocked the Fuck Out.

Similar to TKFO'd, but you get KFO when somebody doesn't get in between you and your opponent fast enough.
Oh man, Gingo was KFO after ten seconds against Big Chief Uggamug.
by Spangvillain April 04, 2006

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