Hoc cor mei metum atrum lacrimat...
Not really a fandom, but the seasonal anime watchers. Most of them are fine, but there's a specific group of them that think they're the s**t for watching adaptions of stories that others have already read or played. Plus, they seem to look down on people who talk about older anime.
There's also the extreme slash yaoi fandom. I'm fine with the yaoi fandom and some of the slash yaoi fandom. I mean, the main characters of No. 6 are just asking to be paired, but mortal enemies stay mortal enemies (I'm looking at you, Shizaya fangirls) and bros are just bros. No need for every straight guy in a series to go ******** with every other straight guy in the series.
...atqui animus meus insaniam sanguinat albam.