A few days ago, B.o.B was in Las Vegas filming an MTV spring break special at the palms hotel. While in town, he also attended a Young Jeezy concert and hung out with Big Sean. On this March afternoon, he sits in a midtown Manhattan Italian restaurant with Las Vegas still on his mind. “What happens in Vegas stays in Vegas—except for the hangover,” he says with a hearty laugh. “The hangover after Vegas is head-throbbing.” But that’s not enough to sideline him—Bobby Ray Simmons Jr. is in New York City to work.