A Canadian Musician with most of his songs about smoking weed. Give him a listen.
Hey man did you hear that new KO song about him selling crack when he was younger?
by lolidkwtnm July 01, 2011
to go to sleep (to "knock out")
n00b: okies, itz gettin l8, im gunna KO ^_^ 99!!!!!11
by swishersweets April 09, 2008
1. When you knock someone out.

2. When u're knocked out
1. The K-O (knock-out) of Badr Hari was wonderfull!

2. Im totally K-O
by desibabe July 04, 2009
Knifed-Out; taken down by a melee weapon in (any game).
The leet player was ko by a noob.
by l337no0bi3 February 12, 2009
KO Kick Off The start of a sport involving a ball
The KO time is later today as a Royal event is being televised in the morning.
by CriostoirHulme August 01, 2005
KO! means bloodrider in serbian , someone like bro to you.
You help each other, and together torture some jagnjetji people...or maybe kill them..or rape them...whatever.
KO!'s are fearless warriors and make lots of funny jokes 'bout jesuss , skins , grand parada , rastko pornitjar , skins , steven segaul , blackers and bora.
-Desi bre KO!Oces da ubijes slavicu?
-Desi KO! lets kill some jagnjetji people!
-KO! \/ E |- .!.
by krvorodnik October 05, 2006
OK backwards. Originally from Short Circuit 2 (1988), K.O. Derf is OK Fred backwards. Became more common with the rise of chatrooms and IM with people who can't or don't waste time trying to type well.
fred: are you ok?
#5: Functioning 100%. Perfectly K.O., Derf!
fred: it's fred
#5: That's what i said, Derf!

im user 1: i gtg
im user 2: wait bring that cd tomorrow
im user 1: ko durf ttyl
by joefitz July 19, 2005

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