Wow. Your dad has a sex change, but now has a problem because you identify as genderqueer, transgressing the gender binary even more fundamentally than she does. Your girlfriend isn't sure about your taking a more masculine nickname, and your other mother (the one who started out as Mom) just wants to watch The Osbournes.
Sounds like you should make a film about it!
CALLING NATE, dir. Pamela Gawn, 2003 Canada, 25 min. video
Yet another great short film not yet listed in IMDB!