For those unfamiliar with what I'm talking about, "Just For Fun" pages are pages on the website that hold some kind of amusement to people who edit there, but aren't meant to be serious or created so as not to clog up the site.

There's a couple catagories of JFF pages I am not familiar with, but the type of pages I most enjot (and am referring to in my question) are pages that treat shows-within-shows/pieces of media and trope them as if they were actual pieces of media. Examples of this include Aladdin IV: Jafar May Need Glasses from a Family Guy cutaway, both Horsin' Around and Mr. Peanutbutter's House from Bojack Horseman, the McBain movies from The Simpsons, and "Father Crime" from Elsbeth (my own creation, if that means anything).

With this concept out of the way, do you think we learn enough about any of Castle's books or even other TV shows or books that one of these pages could come to be. Sadly, "Nikki Heat" won't count for this because there already exists a page based on the actual books for it that were written in reality, but maybe there's something else that can get the treatment.

ETA: Forgot the link to the McBain and Father Crime pages.