Stern Librarian

A judge, in his golden years, decided that retirement had become too
boring. So he volunteered as a librarian at his local library branch.
     A week later, his supervisor, a stern woman in her sixties, called
him into her office. She cleared her throat, and said, "You know, I
appreciate that when you were a judge, you were stern with lawbreakers.
And you carry that with you to your new job, which is commendable. But
when someone owes an overdue fine, you can't just-"
"I had to throw the book at him," said the judge.
"I know," said the librarian, "but the Oxford English Dictionary?"