Some students were laughing at the librarian for her picture in the last blog post, but she was just demonstrating the international Librarian greeting that they use to recognize each other when they go undercover. So, in case you think it means something else, it doesn't.
By the way, in case you think librarians ARE losers, we do have some common sense. Like this bicycle pictured below? Bad idea kids. The only kids who read and bike are the ones who later text and drive. Don't start!