This can be quite confusing at first because this really means the opposite of cool. When you hear this term, its really not cool in fact it couldn't be more un-cool. Often hearing this means that the person thinks what you just said is totally un-cool, gay and that they are very upset, the person may in fact want to now punch a baby.
Me: Hey can I call you right back, Mike was trying to grill and there is a flaming whore running around in our backyard now. I really need to put her out.
Adeline: It's cool, call me whenever.
Adeline: It's cool, call me whenever.
by beautiful bastard May 27, 2008
by Anon255 February 13, 2013
by clownin247 September 08, 2003
by CreditgoestoTjita1 July 12, 2011
by mary is the coolest February 20, 2006
by clint May 19, 2004