What is Ass Nast?
1.
The nasty, scumy, build up of sweat, crusted feces and other various substances in and around one's anus. Usually an indicator of uncleanliness and/or failure to correctly wipe one's rectum after defecation.
"Frank you need to wipe man, I smell that ass nast from all the way over here!"
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1.
A sex act believed to have originated somewhere in the Orient around World War II. Said act consists of one partner performing anilingus..