Top Definition
Kinda like saying cool just with a k...a word that was made up when u think something is super kool...instead of it just being koolio...its koolioso...
Wow that was koolioso when we drifted on our motorcylces..

I think that Justin is so koolioso because he is such a rebel
by MzBellaRox June 25, 2009

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The Urban Dictionary Mug

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