acronym for goodnight bitches! commonly used by sexy women to tell other sexy women that they are going to sleep.
GNB I am tired as fu*k!
by fisalallon July 13, 2010
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used when someone doesn't know what you do for work.

From How I Met Your Mother, because no one know what Barney Stinsey does for them
"so, what do you do for a living?"
"I work for GNB Bank"
by rabblerabblerabble123 August 9, 2012
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