Top Definition
The stained rim of skin circulating around the anal cavity, making it look permanently dirty.

Pip-a-roof-skin
-Dude, its impossible to clean the pipparufskin.

-My pipparufskin won't stop itching. I hope its not an STD.

-Since my brother got a tattoo, my parents said i can finally pierce my pipparufskin.

-Did you see that fat chicks pipparufskin.
by Joe-Man November 17, 2007

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