While "It's Always Sunny in Philadelphia" star Charlie Day is traveling the world promoting a movie -- his co-star Rob McElhenney is busy fattening up for the next season of the show (seriously). Does fatter = funnier?
Check out TMZ on TV -- click here to see your local listings!
'Always Sunny' Star Charlie Day
New Season Is HUGE ... for Mac
8/23/2011 12:02 AM PDT BY TMZ STAFF
Get TMZ Breaking News alerts to your inbox