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1.
A person driven crazy by blue moons.
On December 31, 2009 millions of blunatics howled at the blue moon!
by Geomancer December 31, 2009
 
2.
The name for someone talking to themselves while alone in public. They may be crazy, they may have Bluetooth, but who cares? They're blunatics...don't make eye contact!
Dude - I thought that guy was asking me for change but I think he was ordering Chinese. What a blunatic!
by Uncle Arthur March 14, 2009