No one is allowed to insult a librarian

Episode 1
"No one is allowed to insult a librarian"

Starring:

Author as Librarian
Patron as Patron

Librarian: Uhm, everything's ok, but I need your library card.
Patron: You don't understand? I don't have one!
Librarian: In that case I can't let you in. I'm very sorry.
Patron: Stupid fuck! (leaves)