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acronym for 'center of attention'
"I like to be COA....always."
by flashin.lights. November 20, 2007
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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2
"Certificate of Authenticity" A phrase coined by Microsoft as a right for an end user to own a particular piece of software.
There is a COA that is attached with your operating system.
by G March 30, 2005
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5
Crown of Ages. Unique Elite Corona.
CoA is a popular and rare item in Diablo II.
by JayZor December 26, 2006
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6
Certificate of Authenticity. It is a holographic sticker that comes with Microsoft software (including Windows and Office) and is usually attached to the side or bottom of a computer to indicate that the software installed on the computer is genuine (not pirated).
My copy of Windows XP is genuine; I have the COA stuck to the side panel of my computer.

I bought a copy of Windows for $10 from some guy in an alley, and it didn't come with a COA. No wonder Microsoft refuses to activate it for me!
by computer_guy February 18, 2008
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