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An place or state of mind inhabited only by people and items that are boss or incredibly hip. A play on the words boss and the country Bosnia. An inhabitant of bossnia would listen to bangin music and wear clothes that are the shit.
Dud: Bro with the accent is groovy. He from Bossnia?

Dave: Dude is fuckin' president of Bossnia.
by Spudsy G April 23, 2008
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