a piece of fecal matter.

when you're hungover as shit after a spending a night drunk as a skunk

I coined the term in my 1992 Fantagraphics comic of the same name. So back off slang stealers. It is named for an ass tampon made of toilet paper which looks like a biscuit when molded by the butt. It is not a name for a turd.

biscuit made entirely of solid dried shit and ass skin flakes

1.a person who is a pain in the ass.
2.a person that is a biscuit in your butt

A crap.