"I'm so sorry son, the reason you don't have a penis is because when you were 5 years old you like to play with Barbie dolls. Your brother, on the other hand, liked playing football, so that's why he has a penis and can have children some day. I'm so sorry if there was a misunderstanding. Try to accept your true self, keep taking estrogen for the rest of your life, and everything will be fine.