A very large, volcanic eruption-like explosive fecal discharge, which causes a toilet bowl tsunami which splashes lumpy beige water back onto the ass of the person sitting on the toilet and the underside of the seat.
"Waking up the next morning after eating that dodgy mexican food, I had to run to make it to the crapper, and when I did, ooh boy..KRAPPATOA!!"
by meetak June 4, 2005
Get the krappatoamug.