Girls who are not lesbians but when out at clubs, concerts, etc. will dance provocatively with or make out with their female friends in order to get male attention. They do this in hopes that guys will see them as "wild" and "sexy"...instead of ordinary desperate attention whores.
Scenario: Brittany and Tiffany are grinding each other on the dance floor hoping that a nearby flock of guys will notice. They do, and one guy comments that this is "hot" and asks them if they will make out.
The girls bargain teasingly with the guys, looking around to make sure that all eyes are on them. Eventually once they are sure that a bunch of people are watching, they will make out. The guys go crazy and flock around them, commenting how hot they are. Exhibitionist lesbian success!