 The DVD version includes an extra scene in the car, in which Peter shows Chris how he looks like an anus by wearing a hoodie, pulling the hood on the drawstring tight around his mouth, and pushing a chocolate candy bar out of the hole to simulate defecation.In addition to Barker and the regular cast, actor Jeff Bergman, voice actor Chris Cox, actor Michael Clarke Duncan, actor Keir Gilchrist, actress Beth Littleford and voice actress Rachael MacFarlane guest starred in the episode.Recurring guest voice actors Chris Sheridan, writer Danny Smith, writer Alec Sulkin and writer John Viener made minor appearances.