Other mistake: At Kahn's barbecue, everyone likes the burgers he cooked on his charcoal grill. Peggy is among the people who crowd around the grill. But in the episode "Hank and the Great Glass Elevator", Peggy and Bobby are shocked when they eat a burger that Luanne cooked with charcoal.
King of the Hill (1997)
1 other mistake in season 1 - chronological order
Starring: Brittany Murphy, Pamela Adlon, Mike Judge, Kathy Najimy, Johnny Hardwick
Returning Japanese (1) - S6-E21
Plot hole: In this episode, Hank meets his paternal half brother. They look alike. However, we saw in an earlier episode that Hank's facial structure takes after his mother, not his father. Since they are paternal half brothers, then the Japanese brother cannot look like Hank since he has a different mother.
Dale Gribble: Boil up some Mountain Dew. It's gonna be a long night.
More trivia for King of the Hill
Question: Everyone tells Luanne that her father is working on an oil rig, not wanting her to know that he is actually in jail. But she knew that her mother was in jail, so why not tell the truth about her father?
Answer: Couple things, first only Peggy knew the truth about Hoyt (Luanne's father) being in prison and Peggy is the one who said he's on an oil rig. But, Hoyt is Peggy's brother, so she could have been trying to hide the fact her brother is in jail. Lucky (Luanne's husband) deduced Hoyt had been in prison, but seems to be the only other person to know the truth, so when Hoyt went back to prison, he kept Peggy's lie up to spare Luanne. Additionally, Luanne was there when her mother stabbed Hoyt and was arrested, so it's not like someone had to break the news to her and they couldn't hide the fact. With Hoyt, even if Peggy wasn't trying to protect her brother's reputation, she didn't want Luanne, who is a sensitive and emotional young woman, to have to deal with knowing both parents are in jail.
Bishop73