a badunkadunk butt
A butt so big and round, it looks like it’s about to pop, and it’s usually owned by a girl who’s got the whole school talking.
Her butt is so big, it looks like it’s going to roll out of her pants.
She walks in, and the whole cafeteria turns around just to look at her butt.
I told her she had a bubble butt, and she said, 'That’s my nickname now.'