Top Definition
An ass so beautifully shaped, sized, and presented, the urge to smack it overwhelms you almost immediately. Very similar to a "badonkadonk". A prime ass includes ass-curvature unparalleled in a "booty" or regular ass.
Did you see James over there on that "prime ass"? He looks happy as a clam.

Hell yeah, bout to see if I can get some of that myself.
by yahooooooo November 29, 2010
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