Rageblackout is where you get so mad that you forget everything... except the fact that you wanna beat the ever living shit outta whatever or whoever is closest to you, regardless. If a person suffers from rageblackouts, the simplest of things can piss them off. (From the TV show the O.C.)
Seth: Face it, our chemisty is undeniable.
Summer: You know what else is undeniable?
Summer: THE PAIN THIS FORK IS GONNA CAUSE WHEN I JAM IT INTO YOUR EYE!
Summer: ..I suffer from rageblackouts.