Term used for a hot fart bubble that was held in for further fermentation to increase smell. Once released from the colon oven those around you smell what you have been cooking, which may also include fecal matter.
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.