A piece of ass-skin resembling the tied end of a balloon or piece of popcorn chicken located within the assholes perimeter.
Janet's butt knot was in full view while she got pounded doggy-style by Jack. Chrissy liked the looks of the butt knot and proceeded to bite it gently.
by Caliman April 23, 2003
Get the Butt Knot mug.by Baz February 21, 2004
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