Butt Shrapnel 

The remnants of poo that are missed in the wiping process. These remnants are free to flake off or stick around.

Oh no! I guess I wasn't thorough in my wiping job considering that I have a nasty case of butt shrapnel

Butt Shrapnel by Lewis Hemingway May 26, 2010

Butt Shrapnel 

The remnants after having explosive diarrhea.

After a long night of drinking, Jeanie couldn't control her bowels and there was butt shrapnel all over the walls the next day!

Butt Shrapnel by Cropdustingtheworld March 13, 2011