Bart's go-go ray idea was "stolen" from the opening credits of [[Johnny Quest]].<ref name=Reardon>{{cite video | people=Reardon, Jim|year=2004|title=The Simpsons The Complete Fourth Season DVD commentary for the episode "Selma's ChoiceDuffless"| medium=DVD||publisher=20th Century Fox}}</ref> Mike Reiss said they did not want to show the hamster getting shocked. But had to for plot purposes.<ref name=Reiss>{{cite video | people=Reiss, Mike|year=2004|title=The Simpsons The Complete Fourth Season DVD commentary for the episode "Selma'sDuffless"| Choicemedium=DVD||publisher=20th Century Fox}}</ref> The first line [[Richard Nixon]] says, during the Duff commercial, was taken verbatim from the [[John F. Kennedy|Kennedy]]-Nixon Debate during the [[United States presidential election, 1960|1960 Presidential Campaign]].<ref name=Stern>{{cite video | people=Stern, David M.|year=2004|title=The Simpsons The Complete Fourth Season DVD commentary for the episode "Duffless"| medium=DVD||publisher=20th Century Fox}}</ref> [[Hitler]]'s head can be seen going by in a bottle of Duff when the quality control man is not paying attention.<ref name=Stern/> Bart sitting in the chair, stroking the hamster is a reference to [[James Bond]] character [[Ernst Stavro Blofeld]], who strokes a cat in his chair.<ref name=Reiss/> The episode contains the first appearance of [[List_of_recurring_characters_from_The_SimpsonsList of recurring characters from The Simpsons#Sarah_WiggumSarah Wiggum|Sarah Wiggum]].<ref name=Groening>{{cite video | people=Groening, Matt|year=2004|title=The Simpsons The Complete Fourth Season DVD commentary for the episode "Duffless"| medium=DVD||publisher=20th Century Fox}}</ref>
== Cultural references ==
[[Image:Duffless.jpg|200px|thumb|right|Bart reaches for cupcakes in a scene that parodies ''[[A Clockwork Orange (film)|A Clockwork Orange]]'']]
When Bart reaches for the cupcakes, it is a parody of the women's breasts in [[A Clockwork Orange (film)|A Clockwork Orange]]<ref name=Reiss/> The Duff clock is a parody of the [[It's a Small World]] clock.<ref name=Stern>{{cite video | people=Stern, David|year=2004|title=The Simpsons The Complete Fourth Season DVD commentary for the episode "Selma's Choice"| medium=DVD||publisher=20th Century Fox}}</ref>In the Duff TV ad, a group of women were leading an anti-sexism protest in front of the McMahon and Tate building, a parody of the McMann and Tate advertising agency from ''[[Bewitched]]''.<ref name=Reiss/> The scene toward the end where Moe points toward individual customers declaring they'll "be back" before pointing toward and addressing the viewer--later revealed to be Barney via a cutaway--is a parody of the end of the movie [[Reefer Madness]].<ref name=Reiss/>
