Simply put, explosive diarrhea. The term is usually applied in the instance where the perpetrator doesn't "make it" into the fully seated position prior to detonation. The result being a completely fouled facility - floor, walls, possibly the ceiling, etc.
The haz-mat team was called in to clean up the men's room after someone shatter blasted the stall.
by Bizzle my dizzle September 13, 2013