When a chick is eating out her girlfriend, and after resting her face all up in that pussy, she emerges with her girlfriend's juices all over her face. Kind of like a facial treatment, only better. And more moisturizing.
Crystal: So, Stacey, how was your night with your girlfriend?
Stacey: Fantastic. I was eating her out hardcore and she was so wet, I ended up with a full lesbian face mask! It was killer!
Crystal: Right on!! You lesbians are so lucky. I still gotta use that charcoal one.
A female on Facebook who lists herself as being in a relationship with another female friend, while in reality she is heterosexual and lists the reltionship out of some bizzare feminine vanity.
Dude #1: "Oh shit son this chick is into chicks!"
Dude #2: "Nah dude, she straight, shes just a Facebook Lesbian. See? Her preference is men."
A girl who claims to be lesbian, but really is not. This is claim is usually made due to several factors, sometimes all combined. Those being, Confusion, Aiming for acceptance from actual lesbians or other facebook lesbians, sometimes these girls have never fully matured and been able to open up and be comfortable around guys, so they just settle for girls who they are more comfortable with, especially with showing their bodies off.