mobbed a rum'un Share definition Flag A phrase from the Norfolk dialect used to describe when somone has made a lot of fuss. "stop crockin boi yer mobbed a rum'un over nufin an you got evryone else all a puckaterry" mobbed a rum'un by king slop August 26, 2007 0 0 Get merch Get the mobbed a rum'un mug. Buy Now — $32.95 See more merch