When the ass of a wo/man (or lack thereof) gives the appearance that their booty is apart of their back. There is no gluteal protrusion thus giving one a back booty.
Guy #1: Damnnnn her shit is wobblinâ bobblinâ
Guy #2: nahhh I thinks it lows saggy asf. She has a back booty high key
Guy #1: youâre fucking dumb she got the C A K E S out
Guy #2: nigga if you look past the pants youâd see what I mean dummy her booty is too saggy.
Guy #1: this nigga dumb asf I swear *facepalm