It's Always Sunny in Philadelphia star and creator Rob McElhenney revealed which of their jokes has aged the best over time. Fans of the long-running sitcom currently await It's Always Sunny season 17, which will premiere with two episodes on July 9. McElhenny will continue playing Mac, and also remains a lead writer and producer on the show.

It's Always Sunny in Philadelphia star Rob McElhenney knows you think it's "kinda douchey" for him to change his name to Rob Mac, but here's the thing — he doesn't really care. The actor took to social media Tuesday to explain his decision in a characteristically comical video captioned simply, "I said what I said."

Rob McElhenney’s new last name has high potential. But for his wife and “It’s Always Sunny in Philadelphia” co-star, Kaitlin Olson, she isn’t fazed by the switch-up from McElhenney to “Mac.” The actor filed to legally change his name last week and is waiting for the court to make it official.