mental disorder
The act of thinking there are more than two genders.
Idiot: "Tumblr invented a new gender called vapeogender! Basically when I'm exposed my gender turns to smoke!"
Normal person: "Dude if you think your dick turns to smoke when they pull down your pants you have a mental disorder, if you have a dick you are a male, if you have a pussy you are a female, if you have none you don't belong to this planet!"