ba-dunka-dunk butt - A big round butt that looks like it was carved by a fat kid

A big round butt that looks like it was carved by a fat kid with a spoon and a curse

My aunt’s butt is a ba-dunka-dunk butt. I swear it’s got its own zip code.

I sat on a ba-dunka-dunk butt and my jeans got a life sentence.

That girl’s butt is a ba-dunka-dunk butt. I would follow her anywhere, even to the DMV.