The Venn intersection of awesome and kick-ass.
Alternatively: the subset inclusive of members of the both the set of things that are awesome, and the set of things that are kickass
ie: Things that are both awesome and also kickass.
First known usage:
December 30, 2004 by Joshua "Danger" French, in an IM
conversation regarding
polar bears, documented in a blog-post by Bex Schwartz entitled "Crossing the North Pole with a Curtain Rod and an Old Duck."