They’re the wildest gang on MTV and the cast of “Jersey Shore” has all signed on for a fourth season of shenanigans. According to a report, Mike “The Situation” Sorrentino was rumored to be holding out for a higher salary, but everything has been ironed out. From here, the crew will be gearing up to fly to Italy where they’ll get back to their ethnic roots for Season 4. Additionally, Nicole “Snooki” Polizzi, Jenni “JWoww” Farley and DJ Pauly D have all landed their own spinoff shows.