One definition of a male or female is their genitals. But there may be a more defining definition that is more accurate. Let's take the male for an example. Male might be defined as a person with male genitalia and wears male clothing and facial appearance is masculine. Isn't this more accurate than the first? So to break this down even more for more accuracy let's use the math term "equation" and input the "factors". Using the male example again, if the genetically male tucks his genitals up inside and out of sight, dresses in all female clothing, wears makeup and grows his hair long and styled as a woman don't these many feminine factors that have been put into the equation equal an answer that shows s/he is more female than male. By definition genitals are just one defining factor, add all the other girly stuff and the crossdresser is a whole lot more female than male. Maybe you've never thought about it but the more you dress and act female the more you are becoming less male and more female. And as you dress in female clothes, makeup, accessories, mannerisms your mind changes and you think and act more like a woman. Not all genetical women are 100% female, some have high testosterone and low estrogen levels and look manish so when the male is dressed as described if you use the "equation" as criteria you are and have become female, even for just the time you are dressed.
Does that put a smile on anybody's face? Transgendered with no surgery or $$$. WOW
