Plot hole: As Dale comes to Hank's work and talks to Hank about the gun incident he has a spray pack on his back that is filled with poison and by accident sprays Joe Jack. Yet in the episode "The Exterminator" Dale was told by the doctors that he would not be able to use any type of hazardous chemicals with bug spraying as his lungs wouldn't be able to handle the fumes any more. Even if he ignored the advice the chemicals would have at least incapacitated him or killed him.
King of the Hill (1997)
1 plot hole in Soldier of Misfortune - chronological order
Starring: Brittany Murphy, Pamela Adlon, Mike Judge, Kathy Najimy, Johnny Hardwick
It's Not Easy Being Green - S5-E16
Factual error: Boomhauer's car, Ms. Sally, has a Texas flag license plate on it. These plates were not issued until 1992, but Ms. Sally was driven into the quarry in the late 70's or early 80's.
Dale Gribble: Boil up some Mountain Dew. It's gonna be a long night.
Trivia: One of the show's creators made a cartoon about a retarded pig. Boomhauer's voice is based on the voice of an angry viewer who called when he was offended by the cartoon.
Upvote valid corrections to help move entries into the corrections section.
Suggested correction: The person was actually complaining about "Beavis and Butthead." For some reason, they called the show "Porky's Butthole."
To Sirloin with Love - S13-E20
Question: What is Boomhower's occupation?
Answer: Jeffrey Boomhauer is a Texas Ranger as can be seen in the final episode at the end when he sets his wallet down, it flips open revealing a Texas Ranger badge.