: ScreenJunkies visited the set of “It’s Always Sunny in Philadelphia,” where they learned that the normally fit and muscular Rob McElhenney had added fifty pounds to play Mac this coming season.
Why? For the sheer comedy of playing his character as a fat guy. “It’s been disgusting to watch him go through with this adventure,” said Charlie Day. “We were a little on the fence about it for his own personal health and safety,” he added, “but it has definitely made Mac a lot funnier.”
Im not sure how I feel about this because Mac is awesome because how seriously he takes his martial arts and kicking ass. But I trust these dudes judgment, so if he is going to be fat so be it. But why not just use a fat suit, it seems to work every time for black comedians.