In my case, there were a couple of things that were very important for my mannerisms: I never had a male role model (father only came home to eat and sleep every so many months, no brothers) and I was too much of a shut in, lost in my fantasies for all day.
So I never developed a real "girls do this, boys do that" filter.
There's the movies, and books, but these are hardly proper gender roles.
And stories about "real people" are usually boring and the character they portray are only the interpretation of some (possibly drunk) dude with too much free time.
Anyway.
Part of my androgynity is because I just don't know how is a man supposed to act. Another part is that I like how women act (and dress).
Apparently, I can also act as a "translator" for what women say and men say.
Back on what I was thinking before, I only knew what "women dress like" is somehow forbidden for boys, but I never felt any like "I shouldn't behave this way" or so.
In fact, I bought my first skirt when I was like 15.
But I did notice a HUGE change in how I felt about the world when I gave myself permission to wear in public whatever I think is pretty.
I once knew this guy, Oscar, whom I traveled with for a while. He was very abusive, but I seem to be immune to verbal abuse (I just don't get offended at all... I get more offended with a "undeserved" compliment).
He used to call me "nena"(girly) and "perra"(bitch) but there was never anything sexual. He often claimed that "I liked being called like that", because I smile when he called me what I understood as a female name.
So after we parted ways, I was traveling later with other guy (who is like, more emotional than me, cries a lot) whom I like a lot, but I ended feeling like I was "taking caring" of him, and I think that made me change my behavior, somehow.
So, I got to meet Oscar and he told me that my voice had changed. More grown up now, apparently.
But then, now I feel like I am back to my "childish" voice. I feel I was making a childish voice, because I try to not sound too manly. But at the same time I try not to sound stereotypical gay. That wouldn't be nice.
But lately, I think I'm letting my voice be on it's normal tone, not forcing it either way. I don't really know what's the effect it has on people's perception of me...
... I forgot what was the question.