"It's Always Sunny in Philadelphia" creator and star Rob McElhenney is changing his legal name to Rob Mac, and he took to Instagram to explain why.

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."