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1.
A young girl who dresses, or attempts to look like Haley Williams from the band Paramore. a "fake-haley."

i.e. Dying your hair orange, getting a huge fucking gap in your teeth.
Dave: That bitches hair was insane.
Jenn: What color was it?
Dave: Orange
Jenn: She musta been a Faley.
by Jumpin' Jack August 08, 2008