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The flap of skin under the buttocks of a large woman, hanging out of tight shorts or undergarments.

Looking like having two sets of butt cheeks, one on top of the other.
Her ass is so big it has a booty knocker.
by binaculars September 01, 2007
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Sep 8 Word of the Day
A casual invitation / threat used by an individual that is not afraid of fucking someone up.
PAUL: I'm going to beat your ass.

JACK: Fuck around and find out, fool!
by NX STARCHILD October 16, 2020
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