EntityQ2587421· pop 9· linked from 37 articles500 KeysSign in to saveepisode of The Simpsons (S22 E21)Connectionsguinea pigEntitylist of recurring The Simpsons charactersEntityThe Simpsons opening sequenceEntityX (social network)ConceptThe SimpsonsEntityIMDbEntityThe New York TimesEntityWayback MachineEntityFox Broadcasting CompanyEntityHomer SimpsonEntityBart SimpsonEntityMarge SimpsonEntityLisa SimpsonEntityMargaret SimpsonEntityAlbert BrooksEntityKristen SchaalEntityanimal testingEntitytag cloudEntityThe A.V. ClubEntitylist of The Simpsons episodesEntityCategories2011 American television episodesTelevision episode articles with short description for single episodesTelevision episodes directed by Bob Anderson (director)Television episodes written by John FrinkThe Simpsons season 22 episodes