butt scab 

An individual you find extremely annoying and hard to get rid of.

Get out of my face you butt scab!

butt scab by Mindy February 13, 2005

butt scab 

A buttscab is the crispy little wafer of feces that clings to the anus of a cat. Sometimes these tasty little treats can be found on the ground in the shape of a brown cnowflake. Each one is unique but they're hard to find because cats are idiots and love eating their own shit.

LOL I just put a butt scab in your can of pringles.

or

That butt scab dangling off your siamese's butthole looks mighty delicious!

butt scab by Robert Sellers April 23, 2006