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Overwhelmingly ugly or nasty prostitute, usually one from a sleazier portion of a town or neighborhood. Generally, this term is used to describe a prostitute that is actually working the corner or street.
Jimmy: Have you passed 13th and Pine yet today?

Me: No, why?

Jimmy: I drove by after lunch and nearly vomited in my car, the curb monster is out during daylight!
by Binnyswaa March 25, 2011
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