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To steal another persons joke for your own.

Origin is from the character Kenny Bania from Seinfeld who was notorious for stealing jokes.
That bastard totally Bania'd my Helen Keller joke.
by Nino15 February 23, 2011
a device used to impale hallucinogenic aliens
i'll stab you with a hallucinogenic alien banium
by vulocity April 24, 2006