IEAD
Acronym for "Intermittent Explosive Asshole Disorder". Used to describe people who get extremely angry very quickly. These occurrences of intense anger are random with no predictable pattern. Sometimes the anger explodes seemingly out of nowhere. Also, the anger often dissipates just as quickly as it manifested. After being subjected to an IEAD episode, victims feels like they stepped on an emotional land mine.
Watch out for that guy, he's got IEAD. He'll rip you a new asshole before you know what hit you.