Just Unbelievable shortened down to Unb, you can only say it if something cool happens
(Scoring a good goal), That goal was Unb!
by GT23u91284982374 January 20, 2009
Top Definition
the word un-b is an abbreviation of unbelievable. it can be used 2 describe basically anything.
Randal: Dude, come over to my house now i just got an xbox 360.
Drake: Oh my God. Those things are fucking un-b.
by .zola January 13, 2007
Universal Noise for Behhh!
Q: "Sawyer and Juliet a couple?"

To a dumb firefighter thinking he's so hot: UNB
by can i help you? productions February 05, 2009
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