Hank's Back - S8-E20
Corrected entry: Buck Strickland and Hank discuss how Hank has never missed a day of work except when Bobby was born (and Hank pretended to be sick that day). But Hank skipped work in the episode "The Buck Stops Here" (season five), when he searched for Buck and Bobby in Hot Springs.
How I Learned to Stop Worrying and Love the Alamo - S8-E17
Corrected entry: Bobby finds a section of his Texas History book about the first Taco Bell. But the first Taco Bell opened in California. Even though it is a bad text book, this mistake goes beyond believable.
Correction: The scene doesn't go exactly as stated. The main part is Hank was upset there wasn't more about the Alamo and Bobby says he thinks he saw something else about it. But it turns out just to be a picture of a Taco Bell (shaped like the Alamo). Bobby's statement "the first Taco Bell" is just relating to Texas getting its first Taco Bell (as if it was important Texas history) and not saying the first ever Taco Bell was opened in Texas. There is no error, factual or character.
Correction: Since Hank rescued Buck and Bobby from the jam he'd gotten them into in that episode, and often has to go above and beyond his job description for him, Buck probably counts that as working for him.
Captain Defenestrator