Definitions by I am Doktor Penisbutt

shattoo 

A permanent brown ring around one's asshole gradually developed from lack of proper hygiene after taking shits.

The best way to prevent the acquisition of a shattoo is to use a bidet regularly - toilet paper alone will only rub the shit pigments into the skin surrounding the anus.

shattoo by I am Doktor Penisbutt November 11, 2012