I'm not sure why, but this word amuses me every single time I hear it, so I've decided to make it my word of the day, or in this case, the word of the weekend.
Ba-Dunk-A-Dunk = A large bum/arse/behind/booty
Example:
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Please feel free to use this term liberally. Tee hee! ;D
Besos,
CC.