Character mistake: Hank talks about watching the Broncos vs the Cowboys in Super Bowl XIII. This is incorrect. They played in Super Bowl XII. Super Bowl XIII was the Cowboys vs the Steelers.
Square-Footed Monster - S13-E3
Other mistake: When Lucky drives off in the pickup with the tow chain, as the McMansion crumbles to the ground, Luanne runs away from the house, and part of her legs are missing. The animation is incomplete.
Born Again on the Fourth of July - S13-E14
Revealing mistake: When Bill throws a flare into the shed, the owner of the shed warns everyone about it containing all his fireworks. For 2 seconds the man's arm is coming out of his chest. (00:20:30)
Born Again on the Fourth of July - S13-E14
Factual error: When Bobby and Lucky first walk into the church service that is taking place inside the karate studio, the pastor is calling everyone a sinner, and proceeds to point to a picture of Bruce Lee behind him and says he was a big sinner who repented and knew that the unrighteous would not inherit the kingdom of Heaven. Bruce Lee was an atheist.
Serves Me Right for Giving General George S. Patton the Bathroom Key - S13-E15
Other mistake: Here, it's made into a big deal that Cotton wants to be flushed in the same bathroom Patton used. Yet in Season 4, Episode 2, "Cotton's Plot," he successfully gets a cemetery plot in a Texas military cemetery.
Square-Footed Monster - S13-E3
Continuity mistake: While Hank is at Arlen City Hall, asking about forms for a legal petition, the first clerk tells him that Hornsby has been dead for 11 years. The filled directory board is visible on the wall. However, when the second clerk says Hornsby has been dead for 18 years, the directory board is entirely blank.
Square-Footed Monster - S13-E3
Continuity mistake: When the four "day laborers" hop into Eric's pickup, then stop at Mrs. Dwyer's house, there is no doorknob on the door in the wide shot. However, a doorknob appears in the next closeup.
Square-Footed Monster - S13-E3
Continuity mistake: When the McMansion starts breaking apart, endangering the other homes, Dale's watch is on his left wrist, as usual. But when the neighbors arm themselves with tools, Dale's watch is on his right wrist (it's not a flipped shot), then it returns to his left in the next shot.
Square-Footed Monster - S13-E3
Continuity mistake: While the neighbors are tearing down the McMansion with their tools, when Hank chainsaws the door and kicks it in, Hank's watch suddenly vanishes from his wrist mid-shot.
Square-Footed Monster - S13-E3
Other mistake: During the storm, after Peggy uses the axe on the McMansion support beam, when it cuts to Luanne running with the tow chain attached to Lucky's pickup truck, note the other end of the chain in midair is missing. The animation is incomplete at the left side of the screen.
When Joseph Met Lori and Made Out with Her in the Janitor's Closet - S13-E23
Continuity mistake: After Dale pours cereal into a large bowl for cereal night extreme, he removes three boxes of cereal out of the cabinet and we see the empty shelf over the paper towels, but as Joseph stomps out of the kitchen there are boxes on that shelf. Then the appearence of at least one of the cereal boxes changes on the table. Also, funny how Dale pulls the mixer out of the large bowl and turns in on, but its cord is not plugged in.
A Bill Full of Dollars - S13-E6
Continuity mistake: Peggy, Minh and Dale feel responsible for Dale losing all his money after investing in the stock market. To help him out, they pool all their money and the loose bills fill a large basket. After the money ($5000) is stacked and bundled, there are only five small bundles. They put the bundles in the basket and take it to Bill's House. When the money is placed on the living-room table, there are only three bundles.
Deliberate mistake: Luanne gets pregnant at the end of season 10 and gives birth in this episode. However, despite the passing of several months being implied through various storylines in the interim, she does not have a pregnant belly until this episode. The rest of the time her stomach was as flat as it usually is.
Continuity mistake: When Dooley is saying "She still wants to dance," Clark is standing next to him and they are roughly the same height. When the shot changes, Clark is suddenly a few inches shorter than Dooley.
Character mistake: When Peggy is meeting Lucky's sister at Luanne's baby shower, she mentions that she lives across the street. However, the baby shower is taking place at Peggy's house, as evidenced by the layout of the house and the wallpaper.
Suggested correction: Peggy does live right across the street from Luanne, which is what she is saying. Myrna knows she was at Peggy's house. Since Myrna never met Luanne, she might not know where Luanne and Lucky live.