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Residual, rolled up pieces of toilet paper left after wiping one's rectum. These artifacts are often found tangled in the hair adjacent to the sphincter. However, they my become dislodged resulting in the universally hated foot mummy and/or shower drain mummy.
"I was changing my underwear and a sphincter mummy fell out. Howard Carter would be proud."
by Moistmerkin69 May 09, 2013
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