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Wikisimpsons - The Simpsons Wiki
Season 4 Episode
074 "I Love Lisa"
"Last Exit to Springfield" 076
"I propose to determine the answer to the question: Is my brother dumber than a hamster?"
Lisa's Science Project
Episode Information
Episode number: 75
Season number: S4 E16
Production code: 9F14
Original airdate: February 18, 1993
Chalkboard gag: "Goldfish don't bounce"
Couch gag: The family run past the edge of the film
Guest star(s): Phil Hartman as Lionel Hutz and Troy McClure
Showrunners: Al Jean
Mike Reiss
Written by: David M. Stern
Directed by: Jim Reardon
DVD features

"Duffless" is the sixteenth episode of Season 4 of The Simpsons and the seventy-fifth episode overall. It aired on February 18, 1993. The episode was written by David M. Stern and directed by Jim Reardon. It guest stars Phil Hartman as Lionel Hutz and Troy McClure.


"Homer is arrested for drunk driving, and Marge persuades him to stop drinking beer for a month, which gives him a whole new outlook on life. Meanwhile, after Bart ruins Lisa's science fair project, she comes up with a new experiment: To determine who is smarter, Bart or a hamster."


The episode opens at the school science fair, with Bart presenting a Go-Go Ray: He zaps all the teachers, causing them to dance uncontrollably. Principal Skinner declares "First Prize" over and over, while Bart's dream fades out to Lisa saying into Bart's ear "First prize...first prize..." She explains that she was "just screwing with [his] mind."

At breakfast, Lisa shows the family her science fair project: a genetically engineered tomato which she hopes will cure world hunger. Bart's actual project is the effect of cigarettes on canines, mainly Santa's Little Helper, but Marge orders Bart to cut it out. Meanwhile, Homer plans to skip work and go on a tour of the Duff Brewery with Barney Gumble. At the brewery, the two partake in free samples, Barney much more than Homer. Homer, who has hardly had anything, refuses to let Barney drive home after the tour since he drank enough to pass out. Lou, Eddie and Chief Wiggum, who have been waiting outside the factory for anyone on the tour to drive away, pull him over and despite passing a sobriety test flawlessly (touching his nose with his fingers alternately while balancing on one foot and saying the alphabet), he is arrested when Barney tells them to use the breathalyzer. His license is revoked, and he must attend traffic school and Alcoholics Anonymous meetings. Meanwhile Barney, who is obviously drunk, is allowed to drive away after running over Chief Wiggum.

After school 3 days before the science fair, Lisa leaves her super tomato under Bart's care for a moment, who takes the opportunity to hurl it at a bent-over Skinner. Lisa appeals to her mother for help, who suggests that she run a hamster through a maze. She takes the idea to heart, but instead of just testing the intelligence of a rodent, she puts a hamster against an unknowning Bart to find out who is smarter. Lisa tests both the hamster and Bart first in acquiring out of reach food, then in the electroshock theory. After two tests, the hamster leads 2-0.

In bed, Marge gives Homer a magazine quiz about his drinking. Hearing his answers, she asks that he give up beer for a month, to which he finally agrees. Homer reminisces about the time he first drank beer, passing out listening to Queen, and is taunted by ubiquitous sights of beer, but later comes to realize that watching baseball sober is boring, and that beer commercials falsely state that beer turns angry feminists into attractive swimsuit models who cling to ordinary men. Meanwhile, Bart finds Lisa's project notes and hides them. He plans to lead her on a treasure hunt to get them back but she finds them after just a minute. At the science fair, Both Lisa's project and chance for revenge are ruined by Bart's project: "Can hamsters fly planes?". Lisa tries to protest that the project has no scientific merit, but everyone ignores her. A cute hamster flying a miniature plane wins over Skinner, who hands Bart the winning ribbon for real, much to Lisa's dismay.

At Homer's first AA meeting, he confesses that his desperation led him to "sneak into the football stadium and suck the dirt underneath the bleachers". When Reverend Lovejoy says that after finishing AA he will never drink a beer again, Homer screams and runs away. However, as time goes by Homer also exhibits more positive changes, such as his belly getting smaller and having over a hundred dollars. After 30 days, Marge is proud of Homer for upholding his end of his deal, while a thirsty Homer rushes back to Moe's, money in hand. Marge argues that just because Homer honored his alcohol-free month does not mean that he has to jump off the wagon the moment it is over. Homer goes anyway, and is about to drink up when he sees what effect alcohol has had on the barflies, and heads homeward. The episode closes with Homer and Marge riding a bike into the sunset.

In other languages[edit]

Language Name Translation
Germany.png Deutsch "Keine Experimente" No experiments
Spain flag.png Español "Sin Duff" No Duff
Hispanic America.gif Español "La promesa" The promise
Italy Flag.png Italiano "Niente birra per Homer" No beer for Homer
Flag of Japan.png 日本語 "バートVSハムスター" Bart vs. Hamster

The Saga of Carl - title screen.png Wikisimpsons has a collection of images related to "Duffless".
Season 4 Episodes
Kamp Krusty A Streetcar Named Marge Homer the Heretic Lisa the Beauty Queen Treehouse of Horror III Itchy & Scratchy: The Movie Marge Gets a Job New Kid on the Block Mr. Plow Lisa's First Word Homer's Triple Bypass Marge vs. the Monorail Selma's Choice Brother from the Same Planet I Love Lisa Duffless Last Exit to Springfield So It's Come to This: A Simpsons Clip Show The Front Whacking Day Marge in Chains Krusty Gets Kancelled