N. The outcome of when one can no longer hold in their feces and uncontrollibly sharts whilst sitting. In an attempt to hide it just lets it stay and hopes noone notices. After a while the squished feces crusts over leaving a hard misshapen lump of poop stuck to your back side.
Expression: Used to express intence anger, dissapointment and/or denial.
I'd better clean this up if I don't want to deal eith booty crust later.