This would be a large butt or booty. Has been misspelled on this website by the "urban" MTV cultured viewers. Has root in refering to a butt that would be likened to a donkey's behind, meaning that it sticks out quite a ways. Should only be used in context of describing a females abnormally large butt.
Did you see that girl who walked by? She had a badonkadonk! Damn that was a big booty
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A fat ass, big booty.
buttposterior
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Possibly the lamest synonym for 'booty' in the history of lame synonyms for 'booty.' Another example of someone trying to start a catchphrase and failing miserably.
"Badonkadonk."
"Say what?"
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an extremely large and lustful back-side of a woman
Becky's badonkadonk gave me a throbbing boner and made me want to make love to a double cheeseburger while listening to kenny chesney. peace homie.
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n: MMMmmmhmmm, das junk in da trunk!
Park yo' car, smell dat funk, cuz dat girl had a super-fine badonkadonk!
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