I commend the way you add another 3 a's into the word narrow; you think it makes you appear clever and yet cool at the same time.
Of course I'm not going to do any research on genetic anomalies any more than you've done any research on how to be clever or cool.
I call a person born with a penis a male, and one born with a vagina a female. That's called reality. You of course can invent 48 more genders should reality be too uncool for you and if you're desperate to show how right-on you are, but it's a total waste of time. Facebook is pandering to mixed-up teenagers. I see no reason to follow suite. Why do you?
Such lovely transphobia. Don't be scared cool dude!
Of course, you'll be fairly gutted if you ever have a "mixed up teenager" who then kills theirself because people with your views have pushed them to not feel welcome in this world... or are you so upset by having your gender normative values questioned that you would rather your child die?