Top definition
The ranking or placement of girls in the order of the booty sizes.
Guy 1: I'm having a hard time figuring out who I should take to prom. Each of these girls got a fat ass.
Guy 2: Aye man line em up in bootyological order and see who comes out on top.
by PurdueBound June 16, 2009
Get the mug
Get a Bootyological mug for your buddy Larisa.