Butt Explosion 

The act of barely making it to the restroom and then having your ass explode with firey shit. Also referred to as a B.X.

Burt ate lots of spicy Indian food and then he had a butt explosion. No one could go into the bathroom for days.

Butt Explosion by green628 February 5, 2008

exploding butt syndrome 

When you go to shit and everything rockets out of your ass all at once, and is usually part liquid.

My wife can't have milk because she suffers from EBS (Exploding Butt Syndrome)

exploding butt syndrome by sirpoopsalotSR March 12, 2014