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1 definition by Fastgirl

1. Fastgirl
A woman who rides her R1.

A woman who is capable of introducing you to a whole world of hurt if you disprespect her.
Daaamn you see that Fastgirl? She rides the shit out of her R1!
fast girl fasstgirl fast girl fast gir1
by Fastgirl Oct 29, 2008 add a video
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