badonkadonk

a human tush, us. female, of considerable heft and possessing the ability to bob and sway as its possessor walks, dances, or drops it low on daddy's joystick. origin: derived from donkey, colloquially known as an "ass"

Trey: "Sweet Jeeziz. That badonkadonk got me fugged up, fam."

Rich: "No doubt."