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1.
The act of being a boss. A boss is someone who is simply awesome (at everything, any specific thing, or just awesome in general) and doesn't give one sh*t about it.
Guy: Dude, my younger brother is a boss. He just came up to visit me at college, f*cked my friend with huge tits and left without saying anything to us.

Guy 2: Damn...I don't know if I can really handle that much bossetry.

Guy: Bossetry at it's finest.
by viciousmonkey92 November 03, 2011