Also known as the Female Attractiveness Scale, or FAS for short. The 1 to 10 scale that (in this case) men use to rate women from 1 being totally unfuckable, to 10, being the most fuckable person in sight. A 1's natural habitat is at their home feeding their multitude of cats. Whereas the 10, a rare breed, tend to stay outside, around the most people they can find. Common places to spot 10's are crowded ass malls, and or on the beach (if you live near there).
"I think I wanna bang Chelsea"
"Nah dude, 1-10, she like, a 3"