Day after day a young lady would go to the library to check out books. She would return the books the next day and take out more. The librarian began to wonder if she read every one of the books, and one day decided to include a telephone book in her pile of books. And, as usual, she returned the next day.
"How did you like this book?" the librarian asked, pointing to the yellow pages.
"Not much of a plot," The young lady retorted. "But what a cast of characters."