Top Definition
When a married man tells his wife everything, causing her to think less of her husbands friends. This is a nickname like Johnny On the spot, Charlie Hustle, Joe Bag-a-Donuts.
" Hey no one would have found out we were at the strip club if 'Benny Big Mouth' hadn't told his wife."
by Jack Cutone September 29, 2005
5 Words related to Benny Big Mouth

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