Nobody says "Joisey". Stop.
I've heard it before and it's usually people from Jersey City/Newark.
I've never heard anyone drop the r from Jersey and I don't think there's a distinct Jersey City or Newark dialect unless you mean there's a black dialect.
But, as to the question, Chris Christie had his stomach stapled so that ought to DQ him from eating contests. Also, maybe give Bushie a break about his weight/food addiction. You can really hurt people's feelings when you joke about that stuff.
Bushie's feelings? If he didn't want us pestering him about his weight he would not have turned his life into a serialised diary for all of us here to read and for him to troll about his consistent refusal to seriously attempt losing weight. At this point caring about his "feelings" is patently absurd.