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29.
Acronym for the "Super Uber Cool Online Awesomness game" Knight Online. Or can be used o describe someone that plays K.O. entirely too much.
Ex. 1 "I play K.O. all the time... and I have a girlfriend, doesnt that surprise you?"

Ex. 2 "K.O. plays K.O. all the time... and he has the hottest girlfriend on the planet... on the game atleast."
by -{Turkey}- Lt. Emerpoc October 17, 2006
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