Kakayama
Kakayama is when fans take two guys from Naruto, Kakashi and Yamato, and pretend they are a gay couple. It's stupid, but there's so many books about it that even Kakashi is getting annoyed.
"Kakashi: Why do I have to be with Yamato?" Yamato: "Because you're both lazy."
Book cover: 'Kakashi and Yamato: The Perfect Team (Or The Worst Ship)"
Fan: "I'm gonna write a whole series about them being in love." Kakashi: "I'm gonna cry."