A girl, who is known to sleep with people in her friend group quite a bit. She has a casual approach to sex and, at least several of her friends slept with her.
As her friend, you don't ever lose her, you just lose your turn on her.
Friend 1: Dude I am glad Meghan and Mike are over, I have been wanting for my turn on that community slut for a while.
Friend 2: You got a have a go at her! I had my turn on her 8 years ago, right after Ben.