A hissy fit is an explosion of anger, aggression and frustration by an incompetent person. In may 2007 there was a wave of hissy fits on sciforums .
Plazma Inferno! regularly throws a hissy fit but we are under the impression that it comes with the job and that his heart is not truly in it.
Redarmy11 actually started his life on SciForums by throwing a hissy fit. 
- "You're all a bunch of puffs." <http://www.sciforums.com/showthread.php?t=45893>