Fans of the shows call themselves a "brony", a combination of the words "bro" and "pony". At first it was only meant to be used by male fans but the word is now used to describe any older fan of the show without it describing only one gender. A parody of Katy Perry's "California Gurls" called Equestria Girls was used for an ad by The Hub for the show, which has lyrics that also say the word "brony". Its title was later made into which has human versions of the ponies in the show. Websites like "Equestria Daily" and "Ponychan" have been created to share stories, artwork, and news about the show. The websites get more than 100,000 visits a day. A video made by a high school student named Stephen who was using science to dissect some of the physical impossibilities on My Little Pony as part of a class presentation appeared on many news stations and also appeared on Tosh.0. During a phone interview on NPR's comedy radio show "Wait Wait... Don't Tell Me!" in June 2011, past President Bill Clinton correctly answered three questions about the show which led one journalist to jokingly refer to him as a brony.