-The abbreviation of favourite. a pretty jappy slang though

Fav. A man with no equal.

He is... Fav.

a term that most young women use when identifying their best friends.

A fake ass vegan. Someone who calls them self a vegan but loosely follows the rules of no meat, dairy, or animal furs, skins, or testing.

Fancy Ass Varsity Swimmers - Varsity Swimmers that believe that their position as an athlete makes them better than good old regular folk and because they are superior beings, it is unacceptable to allow lesser people and athletes to receive the same treatment and privileges that they do.

FAV stands for "forever a virgin". This is the type of term that you would label someone who is unlikely or never (in you or your friends opinion) going to receive the "action" that every human being covets. Often used to describe someone who is unknowingly making a fool out of themselves.