(noun)
1) A large
female posterior, combined with a slim waist
2) A woman possessing the above.
3) A nickname for a specific
girl possessing the above.
1) "I
wank to
cream in her badunkadunk."
2) "She used to be slim, but The Pill turned her into a badunkadunk."
3) "Her? Yeah, that's Badunkadunk. Careful, she bites."