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An extremely large rump, ass, behind, derriere, buttocks, or gluteus maximus. A "boom-de-ay" usually jiggles when the body is in motion.
DAMN that girl gotta boom-de-ay! I could see it jiggling from around the corner!
by Asharu and Diderrr February 06, 2008
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Apr 21 Word of the Day
I've been jabbed
by Francesco II March 20, 2021
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