763 Share definition Flag The town of Sunapee, NH. Currently in the process of being forcibly taken over by mingebags from south of the border. Brian: Those damn Massholes taking over the 763 gonna freeze to death this winter! John: Screw 'em. 763 by TrowthePlow May 29, 2007 0 0 Get merch Get the 763 mug. Buy Now — $32.95 See more merch