VIDEO : How Did Rob McElhenney Gain 60 Lbs. For It?s Always Sunny?

Rob McElhenney?s transformation on It?s Always Sunny in Philadelphia from Fat Mac to Jacked Mac is well-worn terrain. First, here?s the origins story of Fat Mac: Ahead of the 2011 season of It?s Always Sunny, Rob McElhenney was editing an episode. During the course of that episode, he saw himself in a shot and thought, ?That?s not a good angle of me,? and considered finding a different shot that made him look better.