ba-donka-donk

ba-donka-donk or badonkadonk  {n.}  {ebonic}

An extremely curvaceous female behind.

Women who possess this feature usually have a small waist that violently explodes into round and juicy posterior (e.g., 34c, 24, 38). Other characteristics would be moderately wide hips and a large amount of booty cleavage (i.e, depth of butt-crack).