Turns out even Bruce Springsteen can crave a good Jersey Shore hot dog every once in a while. Or five dozen. The Boss did his best impression of a regular guy Saturday afternoon when he visited Max’s Bar and Grill in Long Branch to pick up a to-go order. “He came in, and the hostess was young and didn’t know who he was,” said Mary Kate Schiller, the bar manager who was entering an order into the computer when asked to help the next customer. “I was like oh, hello,” Schiller said. “And I tried hard, I tried really, really hard, to treat him like a normal guy.” She felt flustered when the normal…