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Coasty is a adjective used to describe someone's vibe/energy. Coasty can also be used as a label. A word usually used by Southern Californians.
Did you see her spotify playlist?

Yeah dude it was so coasty
by Urbanrainboot December 29, 2014
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A person from the west side of the cascade mountains or seattle area. That travels to the east side of washington state to: stop on the side of the road to take pictures of deer, drive extremely slow, stop where there are no stop signs, ask dumb fuck questions to the locals, constantly seek directions, get their coolers robbed while camping, sit in lawn chairs near the woods with orange vests on and drink beer while pretending to hunt, and overall just being a douche bag.
This dumb ass coasty stopped on the side of the road to take a picture of a deer, so i flipped him the bird and sped by.
by Dr. Tree October 21, 2009
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A single gear bike that has a free wheel mechanism as opposed to a fixed gear setup.
Wow homeslice, that coasty is impressing the hell out of me right now.
by Zabbletron September 21, 2008
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Adjective: Used to describe something that is cozy and toasty at the same time.
Tom: I got this nice fire going while I was chilling on my new sofa, it was quite coasty.
by G.A.L October 31, 2007
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A series of exams taken by prospective Marine Engineers and Mates looking to earn their U.S. Coast Guard Unlimited Licenses. Normally taken by senior merchant marine cadets attending a Maritime Academy.
I've been studying for coasties for the past 2 months and am still scared as hell for the exam.
by Rangoras May 11, 2015
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