An unnaturally high or inflated ego, something on par with the way Tiger Woods feels about himself in golf. This condition is usually found in The Keeg of the species.
The Keeg has egotrocity so bad, he's been talking about himself for 5 hrs straight.
A term used for when a group or person that is attacked unprovoked responds with harsh resistance (often including war crimes), quickly turning the attacking party into the oppressed, resulting in widespread suffering and loss of life.
The situation devolved into a Wastrocity as they began indiscriminately bombing the city and slaughtering every man, woman and child in their quest for vengeance.