Top Definition
A person who spews esoteric and inane factoids (a la Cliff Claven) during a spirited game of Trivial Pursuit or the like. A behavior exhibited much to the dismay of the rest of the players who all suffer from short attention span.
Erik, you are being a T.A. It is possible that Eli Whitney who invented the cotton gin didn't drink gin.
by Bubba January 08, 2004

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