Sometimes, when the moon and stars are perfectly aligned, a pressing need to shit erupts and one needs to book to the dunny, shuck pants and get your moon down quickly so your star can go super nova...
...but in the course of grappling at your belt, and pushing your trousers down as you simultaneously drop butt elevation, a fart can happen and you're literally encased in a toxic cloud of vapour that you can't escape from...
...this to me parallels a No Okie post...