See also: barsexual
A female person who only engages in homosexual activities (e.g. - Kissing, fondling, sexual contact of any kind) on the sole basis of attracting attention to herself and possibly the other party involved, usually in a bar, club, or other highly social event such as a frat party. (Though the latter usually stems from a dare.)
Me: Dude! Did you see Katy and Melissa making out at Mark's party last night?
Dude: Whatever man, Katy's such a Lezbionite.