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The term that is usually used to refer to the butt-hole. Also known as the Sphincter.
"I was going to go naked-jogging so I bent over to tie my shoe, and raphael came up behind me and put his weiner in my brown knot!"

"I was having cybersex with "Cyber-Kat23" and she started telling me her dirty thoughts, she said she was purring, and sticking her tail in my face, and then she said she was licking my brown knot with her sand-papery tongue! It was so kinky it made me cum like a wildcat."
by Jon Botkin and David Meece January 30, 2006
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