1 definition by Dr. Poon Tang, Ph.D.

1. An ass whose curvature is so intense that you can rest your beer on it.
2. A pair of buttocks so spherical that scientists could calibrate their instruments with them.
She had such a ba-donka-donk, I didn't know if I should rest my beer on it or calibrate my "instrument".
by Dr. Poon Tang, Ph.D. December 26, 2007
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