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1. The state of appearing insane to people who can't see your wireless headset for your cell phone.

2. Someone that you think is insane until you see their bluetooth headset and realize they're just a douche bag.
Dude:"Did you see that crazy guy talking to himself on the corner?"
Chick:"Oh, that was Bob. He's on a conference call. He's just bluetooth crazy."
Dude:"What a douche bag."
by cam828 March 20, 2008
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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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