1 definition by KyoukanWolf

Top Definition
FKO
Also known as "Fun Knock-Out". This social 'move' is executed unexpectedly and at the peak of a group's good time. Often times this move results in a complete loss of a good time or any fun being had (or to be had).
"We were five minutes out from seeing the movie when Scott gave us an FKO."
by KyoukanWolf March 28, 2008

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