Fionna and Cake Omnibus

The Fionna and Cake Omnibus is a collection of Fionna and Cake fan-fictions written by Ice King. At the end of the episode, the book itself is animated and proceeds to harass Ice King.

Trivia

 * An omnibus is a volume containing items previously published separately, like the Fionna and Cake book.
 * The book is animated upside-down.
 * At the very end of the episode, after Shelby and Finn have their dialogue, the newly animated omnibus speaks a complete sentence.

Quotes
"Yeah! Write it down! Write it down!"

Gallery
Book