a gynorumus fart possesing nuclear like characterisitcs which spreads a toxic mushroom clowd of poo smog and a viscious nerve gass like odor across a large metropolitan area. Often resulting in a high number of lingering casualties among the population such as birth defects, cancer, tumors and other central nervous system disorders.
A huge toxic and long lingering fart generally audible but possesing a SBD like gasious cloud which lingers for many years similar to the devesation caused at the Chernobyl Nuclear Power in Russia