Top definition
A Pennsylvanian who has crossed the border into New Jersey, often for work. Sadly, most of these people still don't understand how to drive in New Jersey, and still behave like they are in Pennsylvania.
Man this Friggin' riverjumper will never turn left.
by dieKatze88 January 13, 2010
Get the mug
Get a riverjumper mug for your bunkmate James.