Emo Spelling Nazi 

Someone who insists that one spells a band name or song title the way the band spells it despite the fact that the band name or song title is not even spelled correctly to begin with.

Fred posts the following status on Facebook, "Fallout Boy is the worst band ever!"
Brandi comments, "It's spelled Fall Out Boy and they are the best band ever!"
Fred comments, "You Emo Spelling Nazi, they don't even spell their own name right. It really should be 'Fallout Boy.'"
Brandi comments, "Fall Out Boy is NOT an Emo band."

Emo Spelling Nazi by fredautonom April 3, 2015