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. He explains why in a new video.

Once you go Mac, you never go back. It’s Always Sunny in Philadelphia star Rob McElhenney on Tuesday night decided to “dedicate exactly one minute” to explaining his legal name change to Rob Mac, which was first reported by TMZ last week and already has hit FX’s splash pages for It’s Always Sunny.