[Funkduder]

Well Ultima, all I can really say is "man up" and tell them the truth, in the best way you feel they can understand it. If it gets you a "What the Hell?" response, then so be it. It's out of your control at that point. I don't know if your family could be or would be understanding, but I do know that if they truly care about you, as your family, then being gender-queer shouldn't really matter to them.
On a side note, I think that it's interesting to find this out and find you no less cooler than you were before. :)
Luck be with you, Ultima.
...*reads the post right above*...
Wow... I really need to look at the entire thread before answering next time. XD