Top Definition
Slander term for Costa Mesa, California. Created by Huntington Beach residents to describe the area, with its large Tight Pant, Ray Ban, Flannel wearing hipster population. Costa Messy is the "Shitty Huntington Beach."
Costa Messy, you know the Shitty Huntington Beach.
by The Baddest Bitch! December 07, 2010

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