1. How attractive and/or easy a girl is
2. The probability of hooking up with a decent looking female at a party, defined on a scale from one to ten
2*(number of attending decent looking females)/(number of attending decent looking males)
(if you actually bother to figure it mathematically, consider the booty potential for yourself 0)
"Yo Matt, what's the booty potential on that bitch?"
"Prolly like a 3, she ain't giving up anything!"
"Eli, you trying to go to Walker's party tonight?"
"Hell no! The booty potential is barely 1, it's a sausage fest!"
"'ey Rob, what's the booty potential?"
"Shit mayne, it's off the charts!"