A hole located in the backside of the boxers of an individual who puts his/her boxers on backwards

When a rogue bit of toilet roll gets stuck to your sphincter during wiping.

an extraneous piece of skin or webbing that covers the anus

the slit in the seat of a pair of longjohns or union suit

1. the small growth of skin that occassionally covers the anus of newborn children. Such growth is customarily removed and discarded. 2. someone who is disgustingly useless.

A tag of skin on the anus sometimes left behind by a resolved ass-grape.

A piece of cloth (usually a dark color, most likely black) with a logo or picture of a band on it that hangs over a "punk" persons ass, therefore supposedly showing their undying gratitude for the band. Can also be worn over frontal region, in which it is called a "cock flap", even on females.