From Rebel Wilson to Mark Wahlberg, all the stars hit the red carpet on Monday night for the premiere of "Pain & Gain." But one cast member was noticeably absent. Dwayne Johnson skipped the event due to a hernia that required him to undergo emergency surgery. "omg! Insider" correspondent Christina McLarty caught up with "The Rock's" co-stars and got all the deets. Anthony Mackie even joked, "If The Rock hurts the pebble, everybody's in trouble."