Tons of Texas in-jokes too. One of the main characters was named Luanne Platter, which is the name of the dinner special at a restaurant called Luby’s in Texas (The LuAnn Platter). There’s still a few around, but they were a lot more prevalent back then.

Hank Hill’s job as a propane salesman is also kind of a joke. Cooking a brisket on propane, for example, is a sin. There’s even episodes where the family sneaks around his back to eat charcoal grilled burgers.