A phrase used to say that a girl has a very big ass.
-Dave: Yo rem look at felicia, she has a ba dunk a dunk.
-Rem: That thing Scares me.
-Dave: I like 'em big.
by -Dj- May 25, 2005
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missy elliot said it in a video or something, after she lost alot of weight...apparently that was how she expressed her happiness.

its also really fun to say
"blah blah blah blah...::change in music:: ...blah blah guh-dunk-a-dunk ::repeat::"


"guh-dunk-a-dunk"
"-hey that word you said sounded fun"
by NAAH August 02, 2005
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when guys have a bubble butt

aka a large behind that is pronounced and round.
bob: "do these pants make my butt look big?"

sherman: "yeah, bro. you've got some major ga-dunk-a-dunk going on."
by jess rose August 19, 2006
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