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A response combining a "ok" with the word "coolio" making the person respond by saying ok thats cool!
Person#1: Hey dude lets go see a movie this weekend.

Person#2: Kcoolio
Kcoolio by Theodor Trampe December 14, 2008
A word greater than cool, so much so that it has been known that only the greatest, funny, surprisingly attractive and wise people use it
Girl: gotta go, cyaa
Boy: Oh Okay, cya!
Girl leaves
Boy: Wow, she's so Koolio!
Koolio by DJHarrington May 14, 2014

kooliosis 

in an extreamly cool manner or describing something really cool
He said he had a great weekend. I then exclaimed,"thats kooliosis!"
kooliosis by maleste January 20, 2008
the new "hippest" way to say cool(*lol), expecially when instant messaging!
IM Conversation:
monkeezrok: I got a new Guitar!!!
tammlala: Koolio!!!
koolio by Alyssa March 6, 2004
Jack: i wish i didnt do my own stunts (in that moment Jack was caught in flames)

Jack: So thats what I did for my weekend.

James: Koolio man haha
Koolio by JabbaLicks June 15, 2009
another way of saying 'cool' or 'kool'. an exclamation that somthing is quite good, or that you have approved it.
'im going to town to but a new pair of converse'
'koolio'
koolio by pepperoni September 5, 2003