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Matter and liquid that appears on the back side of the top of a toilet seat. The matter is usually underwear lint flecks while the liquid is often the afterbirth of diarreah.
I wiped away Larry Dales's ass crud with a paper towel and then took to the seat.

The ass crud was dry so I had to lick the toilet seat and THEN wipe it off.
by Hcaz Sakraf February 14, 2008
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