Koolio Share definition Flag 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 0 0 Get merch Get the Koolio mug. Buy Now — $32.95 See more merch