1. An occurence, remark, reply, or otherwise any given situation which genuinely
causes momentary distress or disdain to the point
that one tightens his or her sphincter, as if preparing to be kicked in the ass. (Also spelled using
hyphens, like so; Kick-In-The-Ass, so as to accentuate that the phrase
is to be used, or acknowledged
as one word.)
2. Literally, a kick in the ass.