The Simpsons

Homer Badman - S6-E9

Character mistake: When Grandpa is putting up the American flag for Homer's public access show and Marge says the flag only has 49 stars, there are actually only 38: 8+7+8+7+8.

Krusty Gets Busted - S1-E12

Character mistake: In the scene where the imposter Krusty is robbing the Kwik-e-mart, Krusty's hair is blueish green just like the real Krusty, but when Homer is describing the robber he says the the crook has red hair. This is so you have more clues on who the real impostor is. The imposter Krusty is really Sideshow-Bob who has red hair. (00:04:20 - 00:05:05)

The Last Of The Red Hat Mamas - S17-E7

Character mistake: When Homer finds Marge's folder, it reads "Heist Plan: Burns Manson" instead of "Mansion" as it should be.

Hamster Premium member

When Flanders Failed - S3-E3

Character mistake: When Homer discovers that the Leftorium is going out of business, there is a sign that says 'Coming Soon: Gum for Less' beside the store. Later on, though, Ned says the new store is becoming 'Libertarian Party Headquarters.' (00:15:50 - 00:19:15)

Yoshi

Sideshow Bob's Last Gleaming - S7-E9

Character mistake: Homer drinks 6 non-alcohol Duff at the air show, but is charged for 8.

They Saved Lisa's Brain - S10-E22

Character mistake: The plural form of ignoramus is ignoramuses, not ignorami. The word "ignoramus," a Latin verb-form meaning "we do not know," has no Latin plural-noun form. Therefore, when used as an English noun it correctly pluralizes as "ignoramuses." Someone as smart as Lisa should know this.

Marge Gets a Job - S4-E7

Character mistake: Lisa states that Pierre and Marie Curie both died of radiation poisoning. This is incorrect, as only Marie died of radiation poisoning while her husband Pierre was killed by a horse and cart.

Who Shot Mr. Burns? (2) - S7-E1

Character mistake: Willie says he got arthritis from playing Space Invaders in 1977. However, Space Invaders didn't come out until 1978.

Bishop73

The Homer They Fall - S8-E3

Character mistake: Moe says that no women have been to his bar since 1979, yet in "Flaming Moe's" he hires a female waitress. Also, in the episodes "New Kid on the Block" and "Homer the Vigilante," Ruth Powers appears in the bar, and orders a beer in the former episode while Marge visited the bar in "Bart Gets Hit by a Car."

Bart vs. Australia - S6-E16

Character mistake: Burkina Faso is listed as being among the Southern Hemisphere locations Bart called when Homer is looking over the phone bill; since Burkina Faso is completely within the Northern Hemisphere, it would have made no sense for Bart to call there.

zendaddy621
Upvote valid corrections to help move entries into the corrections section.

Suggested correction: It may not make sense, but Bart isn't exactly the sharpest tool in the shed. In this same episode, he looked at his globe and thought Rand McNally was a country and was convinced by Lisa that the citizens there wear hats on their feet and that hamburgers eat people. Additionally, he could have just decided to prank call someone there if for no other reason than he thought the name of the country was funny.

Phaneron Premium member

Entirely possible, but since Bart had a globe right there to refer to, even someone with his limited geographical knowledge would have been able to tell that Burkina Faso is in the Northern hemisphere, unlike the other locations he did call as depicted in the montage (Antarctica, Argentina, unspecified South American nation, etc).

zendaddy621

Using his globe to determine which countries to call does not negate the possibility of him also calling a number in Burkina Faso for whatever reason suited him. It's ultimately a character decision and not a mistake.

Phaneron Premium member

Homer's Barbershop Quartet - S5-E1

Character mistake: When Marge is making a model of Homer for Bart and Lisa, she makes him bald with his hair round the back of his head as we all know it, but at this point in the story Homer was not yet bald. (00:18:15)

The Simpsons mistake picture

Bart Gets An F - S2-E1

Character mistake: When Bart fakes being sick, on his way to the infirmary he passes the door with a sign that reads "maintanence" but the proper spelling is "maintenance", and when Bart reaches the infirmary, the sign on the door reads "ineirmary."

Super Grover Premium member
Video

Das Bus - S9-E14

Character mistake: When Martin Prince supposedly represents Finland's culture for their recreation of the U.N at the Model U.N. Club Martin's outfit is not in fact a Finnish national costume. The outfit he is wearing actually resembles a traditional Sámi outfit. The Sámi people are the indigenous people living in Northern Europe. The specific style of Martin's outfit has characteristics that are more typical to the Sámi on the Swedish side of Sápmi. (00:02:15)

Coming to Homerica - S20-E21

Character mistake: Marge says Maggie's first word is in Ogdenvillian. However, in "Gump Roast" everyone watched a clip of Maggie saying her first word. (00:17:35)

Casual Person

Another Simpson Clip Show - S6-E3

Character mistake: In the first scene, Marge says it's 9:30pm, but after Homer's flashback the clock next to Homer says it is 11:50pm.

Casual Person

Tree House of Horror X - S11-E4

Character mistake: When the Collector is putting Lucy Lawless into her plastic bag in his lair with the other celebrities, he refers to Tom Baker as "Doctor Who." As a sci-fi nerd, he would know the character's name is simply "The Doctor."

Cubs Fan

Bart Star - S9-E6

Character mistake: When Chief Wiggum shows up to arrest Nelson during the game at the end of the episode, Bart goes with Wiggum instead while pretending to be Nelson. Even a cop as incompetent as Chief Wiggum would not have mistaken Bart for Nelson since he'd had numerous dealings with both before this episode; Wiggum may not be particularly bright, but he knows who's who in Springfield.

zendaddy621
Upvote valid corrections to help move entries into the corrections section.

Suggested correction: Not really a mistake for this show in particular. Characters like Homer, Bart, Chief Wiggum, Grampa and others are deliberately written to be on a sliding scale of stupidity, pretty much exclusively for the benefit of whatever joke the show is telling.

Phaneron Premium member

The Homer of Seville - S19-E2

Character mistake: When Mr. Burns and Smithers are walking through the morgue, the sign on the wall is incorrectly spelled "Hospitial Morgue."

Nikolai
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Show generally

Continuity mistake: This is a mistake for the introduction from seasons 2-20 (1991-2009). When Homer screams, he turns round. You see this in a wide shot. There are no boxes to the right of the door in the garage. However, two just appear out of thin air when he runs through the garage. (00:01:50)

More mistakes in The Simpsons

Tree House of Horror X - S11-E4

[The Simpsons are driving down a road as fast as possible.]
Homer: Dear God, it's Homer. If you really love me you'll save my life now.
[The gas needle immediately drops to empty and the car stops.]
Homer: D'oh.

More quotes from The Simpsons

Trivia: The Simpsons holds the record for most guest stars; it is also the only non-variety show to have had appearances from three former Beatles (Paul, George and Ringo).

Kara
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