* Title drop: This is a common term used in fiction writing to describe when the title of the book is mentioned within the text, often in a way that is significant to the story.
* Self-referential: This is a broader term that describes any instance where a work of art refers to itself, including mentioning its own title.
* Metafiction: This is a literary technique where a work of fiction draws attention to itself as a fictional construct, which may include mentioning the title or other aspects of the book's creation.
Ultimately, whether or not the title being mentioned is significant depends on the context and the author's intention. Sometimes it's just a simple reference, while other times it can be a clever way to foreshadow or emphasize a key theme.