What is ba-unka-unk?

A ba-unka-unk is a girl that has a booty but no D's. Derived from Badunkadunk. Big booty no boobies.

Damn that chick is hot. Naw man shes a ba-unka-unk. I could rest a cup on that ba-unka-unk

ba-unka-unk - meme gif