"exwhore" aka "x-whore" aka "exclusive whore" comes from the binary function x-or (exclusive or). There's no meaningful connection beween the "or" and the "whore".
by dickheadcumslaughterwhore May 28, 2010

Guy 1:Dude, Suzie is totally trying to get with me!
Guy 2: Really? she seems like such a good girl.
Guy 1: She must be an exwhore.
Guy 2: Really? she seems like such a good girl.
Guy 1: She must be an exwhore.
by guywhowritethething February 20, 2017

when your friends step in to tell you that you need to get rid of your cheating girlfriend/boyfriend
by Phrancis Sinatra March 06, 2016
