>>938256259 (OP)
I have similar thoughts, but the other way around. I want to know what feeling horny is like, what masturbation is like, and overall what it's like to have a vagina. I'd much prefer one over a penis.
But since you asked:
>what does ejaculation feel like
Ejaculation by itself doesn't feel like much, it's more-so the build up. While you're masturbating, you feel a little bit of cum begin to start building in your penis. Sort of like when you have the urge to pee but nothing really comes out. As you keep going it builds up more and more, and each stroke becomes more pleasurable. Your dick starts to twitch and you feel your cum leaving you as you slowly deflate because all of the blood in your dick goes away.
>what does being hard feel like
It's like having a fully extended muscle. Closest thing I could find on my body is fully extending my thumb out, as hard as I can. There's nothing inherently pleasurable from being hard, but you can feel the difference in your brain. You just become completely focused and aware of it. The closest thing I imagine on the female body would be the clit, so just that but a lot bigger.