How do transgender people know what it feels like to be the opposite gender?

I don't know if you are trolling or serious, but I'll assume the latter.

I think it's an interesting question. I winner something similar, but as I look at it: as a straight cis-gender male, do I know what it feels like to be male? I mean, I feel the way I feel. I don't think of any of my feelings in terms of it is how a man feels. So I don't understand why someone who is assigned a male gender at birth may feel like they don't feel like a man.

I think it's because society makes it easy for me to "feel like a man" so I don't even notice it.

People I know who are trans describe growing up feeling that things weren't right. They struggled until they started thinking of themselves as the other gender and things "felt right".

I'd love to hear from a trans person on this.

They don't. They use their imaginations. I've never met a man who knew what it was like to have period cramps, bleeding once a month, or painful ovulations, or baby cravings, and definitely not carrying a baby around inside you for 9 months, or having to wear a bra; and I have yet to meet a woman that would know what it feels like to have a genuine penis and testicles hanging from your crotch, and having to keep them tucked away in your underwear.

I'm not gonna use mood swings or the sex drive thing as examples, because men can have mood swings too (just not for the same reasons); and women who are either very sexually active, are having hormone fluctuations for some reason or another, or suffer from nymphomania, all can understand what it's like to have a strong sex drive. Hunger cravings can be experienced by both men and women, just not for the same reasons.

Ask a hermaphrodite

They don't.
Their ideas are based on the same "social constructs" they loudly yell about when among their other blue-haired friends.

On the one hand, they blame you for upholding "outdated gender stereotypes", on the other, they insist that they will only become better once they wear dresses, paint their nails and use a fake voice to pretend to be a girl, swallowing hormones and counting the days until they're dick is mutilated and turned into a fake vagina that won't even fool a blind virgin.

It hurts itself in its confusion.

I actually asked this question to a few of them in some discussion boards that are dominantly left wing. Among all the inevitable fighting, here's what I managed to get.

Some of them say "I just know", or "I just feel it", or "I just do". Yeah, take from those as you will.

However, some of them have shared details of their life experiences and how their feelings progressed and evolved. One of the most common stories is that they just "didn't feel right", and when trying out different things, passing as the opposite sex was the one that brought them comfort and euphoria. It "felt right", they said. It's not unlike liking yourself in certain clothes, even if you dress oddly to other people.

Another story is that they are dreadfully uncomfortable with their own bodies. This could be the result of sexual harassment or some other traumatic event. And some of them genuinely don't know where that discomfort came from; it just slowly grew within them overtime without cause. Hence, that infamous "brain in wrong body" bullshit.

And one more story that many of them inadvertently admit is that they were given the idea by other people on the internet, pressured into it with FOMO (fear of missing out), and tempted and assured by promises of love bombing.

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