It's funny to me because while I was in the waiting room before my vasectomy I read through the textbook with the urological techniques in it and looked through all the different vasectomy variants plus the reversal procedure. I've got kind of a medical background so none of it bothers me but the next procedure was orchiectomy and I couldn't make it through the first couple of steps without having to close the book.
Whenever I've encountered someone being trans-skeptical (or whatever the subset of transphobia is where they don't believe in it as a thing) I've always brought up how horrifying the idea of getting your dick and balls cut off is as a cis man. I try to paint a vivid picture and make the guy I'm talking to really imagine someone surgically removing his genitals and think about what it feels like to imagine that. Then I say that trans women imagining that exact same thing is one of their biggest dreams in life. The idea of it makes them incredibly happy and excited, so for them to feel that way is undeniable proof that trans is a real thing.
I always figured that there's a small chance a little bit of bigotry gets chipped away and if not at least I got to make a chud imagine getting his dick and balls removed. These encounters have all occurred before my vasectomy though, and the psychic horror I experienced while briefly going through the first steps of an orchiectomy made me realize that I had to go back and read through it in more detail so that I could really abuse whichever transphobes I run into next.