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A super-intelligent female who has loose morals when its comes to end-of-the-night bar hook-ups.
Often has a gaping vagina and/or anus (her preference).

Guy A - "That girl just got perfect on the midterm!"
Guy B - "Dude, I saw her at the bar the other night. She is such a Crosthwaite."
by DisturbedIndividual March 27, 2009
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