A fanfic
A fanfic is like a short story made by someone who thinks they’re cool, but they’re not. It’s about characters they know from a show, book, or game.
My cousin wrote a fanfic about SpongeBob and Patrick going to space. It had aliens and a lot of math.
I read a fanfic about Elsa and Anna fighting over a pizza. It was weird but funny.
My friend’s fanfic had Spider-Man and Batman fighting in a mall. It ended with a lot of destruction and a lot of coffee.