When a girl is just a down right whore/slut. She usually loves white guys then goes to blacks next then wherever and whoever next.
Or you could use Sliz which is equally awesome
Josh: "Chelsea is such a Slizernut she was with Tom last night then she was with Jerome tonight and tomorrow its probably gonna be that asian kid on the 4th floor"
Jerry " What dude!! im dating Chelsea"
Josh "Dude your girl is a Sliz"