Potomac Kid Share definition Flag A Rich White teen that has rich parents , who live in Potomac MD. A Potomac Kid generally is Jewish and drives a BMW. Look at Jim in his BMW. Hes such a Potomac Kid Potomac Kid by fagtron5000 March 16, 2014 0 0 Get merch Get the Potomac Kid mug. Buy Now — $32.95 See more merch