by libragirl April 20, 2008

by samming January 11, 2009

by Harry Hoar October 21, 2012

something you say to a person that bores you, but you want them to seem like you're actually interested in what they're saying.
Person 1:"hey did you know that plants go through photosynthesis? also they produce oxygen for us to breathe!"
Person 2:"really? that's so coolio!!!"
Person 2:"really? that's so coolio!!!"
by RAndOm_PeRsON*^_^* October 29, 2009

Coolio, derives from the word, cool, as an adjective that describes someone who you desire mostly. People or inanimate objects such as the PS3 would be described as coolio
by CHANTHONY December 20, 2006

by Da Prince of Crunk March 26, 2007
