When you have to take a shit really bad, but are not near a toilet,in attempt to relive some of the pressure,carefully farting so that ony the gas escapes from the anus,going around the massive load of shit trying to exit you as well,usually resulting in the fart smelling just like the shit poking at you.by doing this you do run the risk of shitting your pants.

When you eat dirt for the first time and leave your family to build a shack in the woods