Continuity mistake: When young Al reaches forward with his left arm to take the book that Miss Degroot wants to give to him, she quickly pulls back but young AL still has his arm raised. In the next shot, his hand his down by his side.
Build a Better Mousetrap - S2-E15
Continuity mistake: When Al hits his thumb with the hammer when trying to hit the mouse in the wall, he hits his left thumb. In the very next scene, Peggy is wrapping up his right thumb.
Continuity mistake: When Al comes home, he finds a written message from Peg saying that she, Kelly and Bud are at Marcy's house performing the Village People. However, Peggy couldn't have written the message because when they agreed to play the Village People, they went over to Marcy's immediately. (00:04:50 - 00:06:10)
Continuity mistake: Al enters the house at 3am with Lucky. It is sleeting outside and there is snow all over the front and backyard. Later that day, Al is in the backyard, no snow to be seen, and grass and bushes in full bloom.
Can't Dance, Don't Ask Me (aka Kelly's Dance) - S3-E13
Continuity mistake: During Kelly's dance, a nerdy girl grabs Bud and starts kissing him, but in the next shot, Bud is standing alone in the background. (00:20:30)
Rock of Ages - S7-E9
Continuity mistake: In this episode, Al has taken on the persona of Axel Bundy, a rock star, so he can fly first class with older rock stars. But before they start a jam in the first class lounge pre-flight, one of them calls him AL when he's prodding Al to join the group when all they knew him by was the name Axel.
Can't Dance, Don't Ask Me (aka Kelly's Dance) - S3-E13
Continuity mistake: While Kelly is dancing with the guy at school, a nerd girl starts kissing on Bud and pushes him backwards. The very next second when the scene changes, Bud on the left side is back playing the record for the music without anyone around him.
You Better Shop Around (2) - S5-E22
Continuity mistake: The manager gives Jefferson a "wobbly" cart to use, but for the rest of the episode it's a normal, fast moving cart.
Breaking up is Easy to Do (2) - S11-E15
Continuity mistake: Before the dinner date, Peggy takes a plate of raw meat out of the dishwasher. Bud and Kelly go to help her put it on the stove, but Peggy's plate is now empty and the meat is on another plate already on the stove. Yet strangely, Bud and Kelly take the empty plate from her anyway and put it on the stove next to the other one.
Continuity mistake: When Al Bundy drops the stiletto shoe into the fish tank, he reaches down into the tank to get it and his sleeve and hand are dry as he shows the shoe. Also, hardly any water drips off the shoe. (00:17:00)
Continuity mistake: In one of the scenes where Bud is forcing Kelly to eat, he tries to feed her cheese whiz but she resists and some of it gets on the side of her mouth. In the very next shot, when Peg runs in, the cheese is no longer on the side of Kelly's mouth.
Continuity mistake: Al takes the kids camping. When he leaves the house, his shirt is light blue. When he comes out from the bushes in the woods, it's dark blue with red stripes.
Continuity mistake: The stolen Dodge is a 1974 model. Peggy tells Kelly that she was conceived in it. However, the episode "Christmas" (Season 7, Episode 12) has a flashback to Christmas 1974, showing both Kelly and Bud. Kelly's height had been marked on a door since 1972.
Continuity mistake: Marcy says her parents never let her have a Barbie as a child. In Season 2 episode 14, Guys and Dolls, Al and Steve steal Marcy's Barbie from the basement to sell to buy a new baseball card.
Continuity mistake: The out of order sign on the toilet changes position between shots. It's level at first. Camera cuts to other men. When it cuts back to Al it is tilted. (00:18:18)
How Bleen was My Kelly - S10-E5
Continuity mistake: The family assumes Fox Viewing positions suggesting they are using an antenna to get reception. A few episodes earlier, Al changed their cable television channels to all men channels. You don't need antennae if you have cable.
Suggested correction: Cable and antenna isn't an either/or situation. You can have cable but still use an antenna to get a local channel if your cable provider doesn't offer that station.
Continuity mistake: Kelly knocks the lampshade off the lamp. Next shot shows it put back on although no-one is around it.
You Better Shop Around (2) - S5-E22
Continuity mistake: When Jefferson and Marcy are getting ready to take off during the supermarket race, Al sprays the floor with oil causing them to slip. Being that it is fresh oil, their clothes should have oil stains. But in the next scene, Jefferson and Marcy are perfectly clean.
Continuity mistake: Al and Bud are being hunted because they are the final male Bundys. However, earlier, in Baby Makes Money (Season 4?) Al and Peg went to the funeral Of Al's uncle, Stymie. There were other male Bundys. The heirs had to produce a male heir and name him after Uncle Stymie to get all the inheritance. The 3 England Show episodes all have the premise that Al and Bud are the only male Bundys left.
Continuity mistake: When the chain is cut with Marcy by Al to release him from the pole, later in the newscast in the background they are showing the cut chain. When on the news, it shows the chain was cut about a foot from the goal post. However when you watch the guy cut the chain for real, he cuts it flush with the pole.