Library

What time does the library open? The voice on the phone asked.
“Nine A.M.” came the reply. And what is the idea of calling me at home in the middle of the night to ask such a question? Asked the librarian
“Not until nine A.M.?” the man asked in a disappointed voice.
“No, not till nine A.M..!” the librarian said, “Why do you want to get in before nine A.M.?”
“Who said I wanted to get in? The man sighed sadly. “I want to get out.”