https://www.vice.com/en_us/article/jgq3x7/fanfic-writer-put-entirety-of-1984-in-the-tags-of-a-story

People have found a new method of trolling on fanfiction site Archive of our Own: literally adding an entire novel to the tags for a fic.

Part of what makes Archive of our Own such a usable site (and such a time suck) is that it has searchable and browseable tags. Authors not only use these tags to add content warnings for their fics, but also as a way to add humorous asides for their readers. The tag for the popular Mandalorian fanfiction "Rough Day" includes one that reads "in this house daddy mando hours are twenty four fucking seven." No other fics are tagged with that phrase, of course, but it does help readers understand the tone and tenor of the fic they're about to read.