How to Annoy People from Philadelphia

I was stationed in NJ for a few years, I really never cared for anyone from Philly enough to care weather I offended any of them or not.

I'm in South Jersey. Does the same apply here?

Growing up near Baltimore, I had the advantage of having quick access to Philly as well as New York and Washington, and all their amenities without having to live in any one of them. Sure, they laughed at Baltimore. It was a bedroom community. But you could jump out of those beds, hop a train, and enjoy those other cities and then ride the train overnight and be home in time for school or work or enjoying your day off without all that grime and crime of a "big city."