Mary Elizabeth Ellis has played the waitress on It's Always Sunny in Philadelphia since 2005 and the character has never been given a name. She told Ryan Seacrest on Wheel of Fortune that it is a never ending joke, that strangers scream it at her in public, and that her son now assumes she works at every place they walk into. The clip is cut so it never ends either. #itsalwayssunnyinphiladelphia #wheeloffortune #waitress