lydiamajora makes many excellent points, but basically the crux of it is;
"End of the day it is not thoughts or feelings that make you a man or a woman. It is not a lifestyle. It is biology.
When people try to describe man and woman using thoughts and feelings it makes the word useless and they tie themselves in knots trying to avoid the true answer. It shows the ridiculousness of their argument."
The answer to are you male or female is usually going to depend on what you piss with "naturally" (not counting reconstructive surgery, which is still far from the "real thing"). It's really that simple a question to answer, in 99% of cases. Humans will usually have the sex organs, hormones, etc associated with their genitals? In 99% of cases, a human with a Y chromosome will have a penis and scrotum etc?
Everything else is bullshit gender stereotypes, and men wanting to put women back in their place (as unpaid incubators/prostitutes/nannies/housekeepers etc), or who sees us and any man who dares dress or behave like us, as lesser or a threat. Or women wanting daughters to dress up like dolls, to mould into nice young ladies, or strong sons to conquer the world and protect them, then making the kid feel bad when they don't meet expectations, or conform accordingly. If I kept typing examples I'd be here all day.
Shirley (I have no problem with people rebaming themselves or using a nickname, I don't get callled by my actual name much myself), anyway, Donna with the nice eyebrows and demure dress should be allowed to piss in a urinal, in peace, without hassle. Donna has a right to be in the mens, and shouldn't give a fuck what Tom, Dick or Harry think of his dress. I know it's not as simple as that, so I would support Donna 100% in that fight. But Donna insists on using the female toilets, where a penis shouldn't be. Donna should be confronting the same toxic masculinity, that drives men to remove healthy penises, the ability to orgasm and having kids? All to feel "normal" or accepted? To feel "right"? Many post op transfer people commit suicide, when the face the reality of living with the results 