Duffless/References

Debut appearances

 * Sarah Wiggum

Cultural references

 * The final scene in which Homer and Marge ride off into the sunset singing B.J. Thomas' "", parodies the ending of Butch Cassidy and the Sundance Kid.
 * Bart talks like Curly Howard from The Three Stooges in a few scenes.
 * The third time Bart tries to get cupcakes, he reaches for them but falls over in insanity. This scene is a parody of a scene in A Clockwork Orange.

Trivia

 * During the tour of the Duff Brewery, the three vats are marked "Duff", "Duff Light", "Duff Dry". The vats are filled by the same pipe, indicating different names for exactly the same product. This may be reference to a urban legend that some gas stations hooked up their regular, plus, and super unleaded to the same tank, charging more money for customers who bought plus or super while getting the same product.
 * In the syndicated version both Martin Prince, Jr. and Nelson Muntz's exhibits at the Science Fair were removed. Martin had a flying balloon which was deflated from a B.B. Gun shot by Nelson from his B.B. Gun exhibit, which he states that he was aiming for Martin's head. In the DVD release, this scene was left in uncut.

Continuity

 * Lisa also uses Bart as a test subject for a science experiment in the comic story Decisions, Decisions.

Goofs

 * In a scene at Moe's Tavern there are two Larrys.