The owner of a popular, reasonably priced restaurant told me this one. It’s about an unbelievably “difficult” couple they had at their establishment several years ago.
This couple, a man and a woman who were pushing middle age (not kids, anyway) ordered two very reasonably priced meals. When the meals came and the man took a few bites he called over the server and said “This meal is undercooked.” The server offered to take it back and cook the meal more or to substitute something. At that, the man said, “NO, I’M GONNA EAT IT, I’M JUST NOT GONNA PAY FOR IT.”