Ripper is the slang term for a type of hot dog

Hot dog

A hot dog is a sausage served in a sliced bun. It is very often garnished with mustard, ketchup, onions, mayonnaise, relish and/or sauerkraut.-History:...

 that is popular in New Jersey

New Jersey

New Jersey is a state in the Northeastern and Middle Atlantic regions of the United States. , its population was 8,791,894. It is bordered on the north and east by the state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania and on the southwest by Delaware...

. The hot dog is deep fried in oil until the casing bursts, or "rips."

"Rippers" were featured in the Travel Channel special "Hot Dog Heavens" and served as a major plot point in a first season episode of the internet serial "Ripster's" which centers on the Pennsylvania tavern of the same name that serves a similar type of hot dog.