A person that lives a life of promiscuity is someone that'
s considered 'promiscuous' - meaning they are very sexually
loose and not at all bothered about remaining loyal to
one sexual partner.
E.g A man that can't go to a
bar without ending up sunk to the nuts inside someone else by the end of the night, or a woman that can't keep her legs closed and hands sex out on a platter to others. A slut, basically.
Also the name of a
2006 mainstream song by Nelly Furtado featuring Timbaland.
"Promiscuous girl, you're teasing me!"