Illogical comma placement.
Fragment, see me after class.
I used to feel like a skinny girl trapped in a fat lady's body, but then I was born.
If you were an MTF transsexual, whose parent was an FTM transsexual BEFORE having surgery, would you be a girl trapped in a boy's body trapped in a man's body trapped in a woman's body, before you were born? o_0
EDIT: Hah, the captcha for this was "mumjo jumbo"... it knoowws.
How could you be a transexual if you hadn't been born yet?
... Transsexual doesn't mean 'has had surgery'. It just means you identify with a different gender. Technically, a foetus doesn't have a comprehension of gender because we learn that as we grow up, but many transsexuals feel they have always been that way.
E: Anyway, it was just a joke, of course it's waaay more complicated than that. :)