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2.
a slutty girl rejected by boys, turned to girls and then later realized she'd rather be with boys.
Jim felt betrayed when he thought he had caused her to switch teams and then realized she was just a fauxsbian all along.
by allie_annek November 06, 2013
 
1.
A heterosexual girl with a large affection and fascination for breasts, who does not identify as a lesbian.
"Stop posting about tits, you fauxsbian."
by Joshua Meadows February 19, 2008