technically means extremely or very cool, but most people who say it never just say cool, so its pretty much useless, unless you can use it with moderation.
guy1: lol, i just totally ownagepwnd these n00bs.
guy2: thats so uber cool, you should kill yourself.
By Kaleena
Uber Cool
Uber comes from german for super. Cool comes from english for not hot. Together they indicate either an extremely low temperature, or something's coolness exceeding normal limits.
First created by Michael in 2004 to show that something was extremely cool. Uber Cool comes from "Uber" which means very, and "Cool" which is self explanitory. Thus the phrase Uber Cool was invented