The Simpsons
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Mr. Plow - S4-E9

Continuity mistake: When Homer is about to drive up the mountain to save Barney and Marge is begging him not to, Maggie's coat is blue. But when the family is watching the mountain goat fall down the mountain, her coat is orange.

6
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The Simpsons Christmas Special: Simpsons Roasting on an Open Fire - S1-E1

Continuity mistake: When Homer finds out that he has no Christmas bonus the background behind Marge is the kitchen, but then it cuts to Homer and the background behind him is the kitchen too. (00:08:20)

5
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Tree House of Horror VII - S8-E1

Continuity mistake: In 'The Genesis Tub,' Lisa sits on a tooth-throne in the tub, which has red cloth draped over the arms with gold tassels around the edge. However when Bart comes to take the tub, Lisa stands up on the throne and yells "Bart, no!" In this shot the tassels are gone. (00:17:45)

Hamster Premium member
6
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Krusty Gets Busted - S1-E12

Continuity mistake: When Sideshow Bob is shouting and screaming just before he is taken away in a police van, Lisa and Bart swap places right before Bart says "Take him away, boys."

6
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There's No Disgrace Like Home - S1-E4

Other mistake: When Homer is at Moe's, there is a boxing match happening on TV. There is a bald guy who is getting considerably battered by the opponent and gets knocked out, and then for some absurd reason he is victoriously standing and smiling as if he had won.

OL1V3R666
5
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Bart Gets An F - S2-E1

Revealing mistake: When there is a zoom in of the house just before Bart gets up late, it has the old arch-shaped windows, but in the rest of the episode it has the normal windows. It's obviously a screen from Season 1. (00:06:00)

OL1V3R666
4
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The Simpsons Christmas Special: Simpsons Roasting on an Open Fire - S1-E1

Continuity mistake: During the family's breakfast, in most shots Marge sits right beside Maggie's highchair, but in certain close-ups they are quite a few feet away from one another. (00:05:25)

Super Grover Premium member
5
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Lisa the Vegetarian - S7-E5

Continuity mistake: When we first see Homer feeding the can to the goat the background shows a wooden coop. In the next shot, a purple tree stump appears there too.

5
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Flaming Moe's - S3-E10

Continuity mistake: At the end, the barriers outside the tavern change position. (00:21:00)

Yoshi
5
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Bart the Murderer - S3-E4

Continuity mistake: During the Itchy and Scratchy cartoon, things change about the positions of the cats, the clothing, etc. (00:07:55)

Yoshi
5
Upvote valid corrections to help move entries into the corrections section.

Suggested correction: This is a cartoon within a cartoon. Things do not always have to be 100% correct.

1
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Bart the Murderer - S3-E4

Continuity mistake: When we first see the papers on top of Skinner, the jar of preserves is not visible anywhere. It is beside him in the next shot. (00:19:15)

Yoshi
5
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Bart the Murderer - S3-E4

Continuity mistake: Bart's bruised eye has healed by the time he reaches Skinner's office to lick envelopes. (00:02:40)

Yoshi
5
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The Call of the Simpsons - S1-E7

Continuity mistake: When the bear first confronts Maggie, she is on a path. Yet in the next shot when the bear lands on the ground, she is on grass. (00:11:15)

Migster
5
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Bart the Genius - S1-E2

Continuity mistake: When Bart is explained the answer RDRR, there is a shot of him. There is a blue background where the classroom should be.

OL1V3R666
3
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Tree House of Horror XII - S13-E1

Continuity mistake: In the end credits when the stars exit the caravan, there is a wooden step under the door of the caravan. However, when they climb into Pierce's car and drive off, the wooden step is gone. (00:20:55)

Hamster Premium member
4
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Realty Bites - S9-E9

Continuity mistake: When the real estate team learn that Marge has sold the murder house, Marge is wearing a red blazer but in the shot which faces Marge's back the blazer is missing, then in the next shot Marge is wearing the blazer again.

4
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Lisa the Vegetarian - S7-E5

Continuity mistake: After Homer prepares the BBQ he holds out the steak and holds it back in as Lisa speaks. When the shot changes he's holding it out again, and the pile of meat behind him is smaller and has moved slightly under the window.

4
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Lisa the Vegetarian - S7-E5

Continuity mistake: When Lisa is first seen petting the baby lamb, she is next to the fence with hay beside her. In the next shot, she's far away from the fence and there's no hay anywhere.

4
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Lisa the Vegetarian - S7-E5

Continuity mistake: Throughout the dinner scene, whenever Homer wants the syrup, it disappears and re-appears next to Lisa.

4
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Bart the Murderer - S3-E4

Continuity mistake: When the mobsters enter Skinner's office, the phone on his desk changes position between shots. Also, the name bar on his desk doesn't read anything on it. (00:13:50)

Yoshi
4
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The Simpsons Christmas Special: Simpsons Roasting on an Open Fire - S1-E1

Continuity mistake: Lewis changes from black to yellow when Milhouse dares Bart to pull Santa's beard off. (00:14:10)

More mistakes in The Simpsons

Homer's brain: It's simple, just use reverse psycology.
Homer: Reverse psycology? That sounds too complicated.
Homer's brain: Alright, don't use reverse psycology.
Homer: Alright, I will!

More quotes from The Simpsons
The Simpsons mistake picture

Trivia: Maggie scans as $847.63 in the supermarket at the beginning (not NRA4EVER, as Troy Maclure asserts in 3F31 "The Simpsons 138th Episode Spectacular), the price it costs to feed and care for the average American baby every month.

More trivia for The Simpsons

Tree House of Horror V - S6-E6

Question: Homer travels back in time and causes changes by what he does in the past, like stepping on a bug. I once saw a movie with the same basic plot: some people travel back in time and are told to be careful not to disturb anything, but when they return to their time everything has changed. In the end they discover it was because they stepped on a butterfly. Does anyone know the name of this movie?

Answer: I'm not sure if this is the one you're thinking of, but an episode of "Ray Bradbury Theatre," called "A Sound of Thunder," dealt with a similar matter: a group of hunters travel back in time to hunt dinosaurs, only to find things have changed when they get back because someone stepped on a butterfly.

Xofer
More questions & answers from The Simpsons

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