a condition comon in everybody. pieces of dried poo sandwiched in between your buttcheeks. to remove these sandwiched poo pieces, simply put your finger in your butt and stroke until poo is eliminated.
Crusties are very proud of their state of filth. A step on you'll find the unwashable. Unwashables truely and deeply loath any form of personal hygiene. An unwashable is a religiously hardcore mysophile who usually stays unwashed & crusty all his life. For them it is not so much a temporary statement of believes as a dedicated way to live, despite often being shunned by society.