Greek underworld his duty was to bring these souls to the underworld and no one would persuade him to do otherwise. Cerberus (Kerberos), or the "Hell-Hound", is Hades' massive multi-headed (usually three-headed) dog with some descriptions stating that it also has a snake-headed tail and snake heads on its back and as its mane. Born from Echidna and Typhon, Cerberus guards the gate that serves as the entrance of the underworld. Cerberus' duty is to prevent dead people from leaving the underworld. Heracles once borrowed Cerberus as the final part of the Labours of Heracles. Orpheus once soothed it to sleep with
What the Hell was "starved of affection from the one she truly loves." Lavigne described the song as "more reminiscent of some of my old pop rock stuff", calling it her "most pop track on the record" and the least personal song from the album. "What the Hell" has received positive reviews from music critics, who have noted similarities between "What the Hell" and Lavigne's previous single, "Girlfriend". Gil Kaufman of MTV.com stated "What the Hell" has "rousing cheerleader energy" and an "infectious groove and peppy vibe". Jody Rosen of "Rolling Stone" magazine said "the music is easily some of Avril's catchiest yet",