look up any word, like blumpkin:
 
1.
its a person that has a saggy ass like a diaper nd its shaped like one
Hoe: Hey daddy you like ma ass

Pimp: Hell no bitch you got dat Diaper booty
by Karc30 June 03, 2009
 
2.
A phrase one says when a flat-assed female walks by.
Aaron: Ay bra she fine ass hell

Parker: Naw bra she got a Diaper Booty
by Granddaddypappi November 27, 2013