A driver of a vehicle with Massachusetts licence plates, that is slow moving, driving erratically or driving witout any direction. Usually refered to in this manner by other New England drivers such as R.I., Conn. or N.H.
"This Masshole better move out of my way or I am gonna throw my chowda at his caw"
Massachusetts Asshole. Dickish, loud, ignorant despite living near the most prestigious colleges in the country, elitist, bad driver, jealous of New York, lives in an overpriced shithole with nothing to show for it, yet proud of it for some reason.
Normal Person: You're such a fucking Masshole. Why is that?