The fatalanus fire disease is a disease found in the butthole cavity. A symptom of this disease is when fire shoots out of your asshole. This disease is basically deadly to the asshole.
The cascading flab that cliff-hangs over a belt buckle, or in particular, a pair of tight fittinghipster jeans. Most commonly seen on chubby pubescent girls.
Alt Def: When the flesh rolls of a morbidly obeseindividual land on you while sitting at a sporting event, public performance, or on a plane, bus, or train.
Ex. Jack almost got buried in a fatalanche when a giant fat kid sat next to him at the Tiger’s game.