An expression said by a man when he wants to make it a point that he likes big girls. When a girl has booty-doo, her stomachsticks out more than her booty do.
Man 1: Damn! That bizatch has got some booty-doo!
Man 2: Yes, I concur. Her stomach does stick out more than her ass.
This term refers to women, or men, when their stomach sticks out more than their "booty-do." In other words, their booty is flat and their stomach is huge. Booty-doo can be found on any race, shape, or color of people.