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1. noun: A 'know-it-all' who actually does know it all. They have a mind filled with trivia on almost every subject. This term comes from a character on 'Cheers', Cliff Clavin, played by John Ratzenberger.
2. verb: The act of injecting unnecessary, but true, facts into a conversation.
2. verb: The act of injecting unnecessary, but true, facts into a conversation.
1. noun: "When it comes to knowing random facts, you are such a Clavin."
2. verb: "You don't have to Clavin everything I say."
2. verb: "You don't have to Clavin everything I say."
by ObiMomKenobi13 May 03, 2013
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Way back when in the 1800's when there were slaves, the black men were known to have a clavin also know as a huge penis. The white men were very jealous beacause the black men would sleep with there women and pleasure them greatly with their lage cocks.
by Smallz and Mach 3 March 26, 2005