Fandom slayer

Someone who persistently pisses of fangirls of all types by obliviously slaying multiple fandoms. Fandom slayers are generally people who have watched only the films of a book series or only heard 2 songs by a specific band and claiming their love for these things.

Fandom slayer: OMG I LOVE DIVERGENT! WHICH ONES THE BLUE ONE THOUGH? THE BRAVE ONE?
Crazy fangirls: DIE PEASANT AND STOP BEING A FANDOM SLAYER