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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
It means Cool or awesome, but spelled better!! its also really fun to say!!! ^_^
Person: OMG i got these cute new shoes!
You: Koolio!!
Koolio by Ya-dun-need-2-kno February 13, 2009
Koolio doesnt really have a meaning cos its made up. Its just a mutation of cool often used in instant messaging.
Bob - My head is round

Fred - Koolio
koolio by John Da Rebel May 17, 2006
a word to use insted of cool or koolies.
made up by tahlia
TAHLIA:hey kierans so koolio
CHARLESE:no he isnt
koolio by tahlia November 29, 2004