The first name joke for kids

The manager of a large office asked a new employee to come into his office.

"What is your name?," was the first thing the manager asked.
"John," the new guy replied.
The manager scowled. "Look, I don't know what kind of a namby-pamby place you worked at before, but I don't call anyone by their first name! It breeds familiarity and that leads to a breakdown in authority," he said.
"I refer to my employees by their last name only - Smith, Jones, Baker - that's all. Now that we got that straight, what is your last name?"

The new guy sighed and said, "Darling. My name is John Darling."

The manager said, "Okay, John, the next thing I want to tell you..."