Question: How can Dale be so oblivious to the fact that Joseph isn't his biological son or that Nancy cheated on him with John Redcorn considering in one episode Dale actually caught them both in bed together.
Answer: That's the shtick. Everyone in town knows that Dale's wife is seeing John behind his back and that Joseph is obviously really John's son, but Dale is completely oblivious (he's not that smart of a man). In one episode, Dale even says he's not homophobic because 'John Redcorn is gay, and he's one of my closest friends.' Of course there is a fan theory that Dale is completely aware of what's going on but chooses to ignore it out of fear of his marriage ending.
Also, if Dale *does* know about the affair, what choice does he have anyway? Explain to everyone he meets that Nancy is his wife, and Joseph is her son from her boyfriend? If he wants to stay with Nancy, then raising Joseph as his own child is slightly less awkward. Especially while Joseph is younger. I know of one man who did this. It was obvious that his wife had an affair, and "his" younger daughter had been fathered by someone of a different race. An "elephant in the room" situation.
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.
Question: Are alleys common in Texas neighborhoods? And are they normally big enough that cars can drive by in two directions? I only ask because they are rare in my part of the US.
Answer: I'm not sure if I'd call it common, but from my experience living in Texas, I do know of plenty of areas that have alleys between houses. They're generally not marked one-way, so cars can travel both ways, but they're also generally not divided into a two-lane road. Arlen is a fictional town meant to be a suburb of Dallas and modeled after Garland. Just looking at the map of Garland, I can tell you alleys seem common in the neighborhoods, but I've never been there personally.
Question: What is Boomhauer's first name?
Answer: His full name is Jeffery Dexter Boomhauer III. (His father is Jeffery Boomhauer II). While he does say his name in the video game, in "Uh-Oh Canada", a woman calls him Jeff.
Question: The Monsignor Martinez - in addition to being a priest, is he supposed to be a vigilante? Or a mercenary?
Answer: I get the impression he's some sort of master criminal, though the specific details are left up to the viewer's imagination.
Question: What possessed Nancy to cheat on Dale? That and why would they think this is funny?
Answer: It's not uncommon in real life for spouses to be unhappy in their marriage and resort to extramarital affairs. I haven't seen every episode of this show yet, but the vibe I get is that it's not so much funny that she cheats on Dale, but how painfully oblivious Dale is to it, to the point where he can't even tell Joseph is obviously John Redcorn's son and not his.
The main joke is that Dale is so fascinated with mysteries, the paranormal, conspiracy theories, etc, he is too busy to notice his wife having an affair. He does not see the "conspiracy" of Nancy and John, happening right in his own home.
Answer: Nancy has stated that she loves Dale "in a 'lights-on' sort of way" (season three - "Peggy's Headache"), and other episodes make it clear she cares about him. It could be a case of her "having the cake and wanting to eat it, too." She can enjoy her affair with Redcorn while Dale takes care of Joseph, due to him not always working much. Perhaps she needs an escape from Dale's reckless adventures and conspiracy theories. An affair is not a good way to deal with this, in my opinion, but there are people who do it.
Question: Hank bears no resemblance to his father, but strongly resembles his mother. Bobby bears no resemblance to Hank (or seemingly Peggy), but bears a strong resemblance to Hank's father. Is it actually possible for a person to bear such a strong resemblance to one of their Grandparents if they are only getting half their genes from that Grandparent's child and that child bears no resemblance to that particular parent?
Answer: It's also said genetics plays a part here. You can look like an ancestor more than a parent. I myself look nothing like either of mine nor do any of my 3 siblings: older brother, older sister, younger sister.
Chosen answer: The short answer is "yes", it is possible to resemble your Grandparent even if your parent doesn't resemble your Grandparent. The old adage is "it's not like mixing paint", meaning combining genes doesn't always get the same result. It's why full siblings don't always look exactly alike even though they have the same genetic makeup. I look next to nothing like my paternal grandmother but I have a child that greatly resembles her.
Is it a mistake then that Hank's Japanese half-brother strongly resembles him, and by extension Hank's mother, or is that still a small possibility?
Sort of. These are animated characters, and the style of animation isn't particularly detailed. The resemblance between the two is played up for laughs. But there are plenty of real life examples of people that aren't related at all but greatly resemble one another. Famous examples are Jeffrey Dean Morgan and Javier Bardem, or Will Ferrell and Chad Smith.
Question: Do we know anything about Bill's parents?
Answer: Much of Bill's background was revealed in the episode "A beer can of desire". He was born to a wealthy Cajun family in Louisiana. Although most of the information about his parents is fairly unknown. Bill has from time to time mentioned that his father was abusive and I believe an alcoholic.
Question: Can someone explain to me what a red shirt means? I know in one episode when someone broke Bill's high school touchdown record that Hank mentioned that Bill was red shirted because Bill went into the army before he graduated thus compelled Bill to go back to high school and try and break the record again.
Answer: The main point of being red-shirted is that a student athlete only has 4-years of eligibility to play. By red-shirting as a freshman, a student is allowed to practice, to get better, bigger, etc and then still be able to play for 4 years (seasons).
Question: What happened to Peggy's brother (Luanne's father)? Why isn't he around?
Answer: Luanne's father does show up in an entire episode: the 12th season finale 'Life: A Loser's Manual.' He stays with the Hills after getting out of jail. However, Peggy has not told anyone that he has been in prison, not even Hank. They believe that he works on an oil rig. But it all comes to light when he causes trouble and lands Lucky and then himself in jail. By the end of the episode he is headed back to prison. The Hills and Lucky keep up the oil rig charade for Luanne's sake.
Question: Why doesn't Hank like Oklahoma? He makes jokes about the state and the people there.
Answer: There is a long standing rivalry between Texas and Oklahoma, so being a loyal Texan he would make fun of Oklahoma.
Question: How come Hank can't say he loves Peggy or Bobby?
Answer: Hank is portrayed as being somewhat stern and uncomfortable with expressing a lot of deep emotion. Maybe it's because of the way his father, Cotton, treats him: scolding him for acting too emotional and such. This is shown in some flashbacks. A recurring joke is that he has no problem being "lovey dovey" with the dog, Ladybird, and easily shows his affection to her.
Question: Hank sees Luanne watching Monsignor Martinez on TV and asks, "Why is the Pope..." and Luanne corrects him, "That's not the Pope, that's the Monsignor Martinez." What episode is this from?
Answer: That's from S2xE23, Propane Boom (1) at about 00:08:30.
Question: What was the episode where Bobby meets Dooley in a line to apply for a job and Dooley says, "I'm building character"?
Answer: It's Bystand Me, season 10 episode 2, when Hank wants Bobby to get a paper route.
Question: Was there an episode where Bobby wrote his name on someone else's jar and tried to rub it off when the owner came back, but it didn't work?
Answer: Most likely thinking of the episode where Connie's cousin convinces Bobby to make meth as their science fair project. One of the judges is a police officer and when he is approaching Bobby is scrambling to remove his name from one of the beakers.
Question: I know that this is a cartoon, but could Hank and Peggy really produce a blonde son, with both them having brown hair?
Answer: In addition to the answer by Raywest, some children have blonde or dark blonde hair that turns brown as they grow. My own brother was like this. His hair was more of a dark blonde, then turned brown in his late teens.
Question: Is this one of the longest-running animated shows after The Simpsons? It's been around for eleven seasons.
Answer: As of 2014, King of the Hill finished with 11 season, putting it 6th among longest running US animated shows (with at least 3 animated shows already in 9th or 10th season.) In terms of episodes, it's 3rd with 259 episodes, behind The Simpsons and The Bugs and Tweety Show, with South Park nearing that number.
Question: Last year, Fox decided to cancel "King of the Hill". Was "Uh-Oh Canada" the final episode or do they have more episodes to come before the show ends?
Answer: The series finale ("To Sirloin, With Love") aired September 13, 2009. Additionally, there were unaired episodes which were first aired as part of the show's syndication package.
Question: I once saw a clip that shows Luanne excitedly telling Hank, Bill, Dale, and Boomhauer about something, and she jumps up and down until her breasts (which aren't shown) come out of her shirt. Was this a deleted scene or a joke made by the show's creators?
Question: In the show's theme music, the person who says "Wooooo hoooooo hooooooo" sounds like Dale. Is it him?
Answer: Listening closely, it's not Dale. It's not meant to be anyone from the show.
Answer: In addition to Brian Katcher's response: it's supposed to be a joke that Dale is always suspicious about conspiracy theories, mysteries, etc, but he is "clueless" about his own wife having an affair. Of course, as Brian wrote, many fans think that Dale is pretending to be clueless because he doesn't want Nancy to leave him.