Tracy Morgan thinks New Jersey is “Third World.” The loose-lipped “30 Rock” star was taped in a heated exchange recently on the roof of Silver Towers on West 42nd Street after he crashed a barbecue to mingle with ladies and argue, “The world is ghetto.” Attending a birthday party for Headquarters hostess Denise Real, he limped over to another party taking place on the roof with a soft cast on his foot and unleashed his rant after guest Konstantin Burshteyn remarked that they were lucky to be at a private party overlooking the Hudson. Morgan barked, “I don’t give a [bleep] what you think . . . This is my mother[bleeping] generalization, not yours.” Burshteyn, a White Plains lawyer, said guests were shocked when Morgan continued, “New Jersey, right across the river, is the Third World.” When Burshteyn rebutted him, Morgan allegedly ranted, “Believe me, dude — I live in a very affluent neighborhood right now and my house, one of them is $2 million, and there is some ghetto [bleep] going on there.” Earlier, Morgan had vented, “I’m from the ghetto, and that ain’t bad . . . I will never be disconnected from my roots. You disconnect the tree from the roots and what happens to the tree? It [bleep]ing dies.”