Félicien Rops, The Librarian (1885)
“Beware the lustful fires that burn in a librarian’s heart.
They can rage beyond all control.”
— Fire Safety And Prevention Tips, The Onion (May 28, 2003)
Beware Librarians and their Lustful Fires
Pop Goes the Librarian
Examining librarians in popular culture
Pop Goes the Librarian 
Haha, love The Onion! And it rather continues in their next tip to read the info on the extinguisher thoroughly, highlighter in hand 😉 Fun!