Who Wants a Haircut is a song performed by the Baha Men in the episode Thank God It's Doomsday. It is a parody of their hit song "Who Let the Dogs Out?" which was previously parodied as "Who Let the Jugs Out?" in the episode Large Marge. The original song was written by Anselm Douglas, while the parody lyrics were written by Don Payne. It is the twenty-ninth track on the album The Simpsons: Testify.