So I'll be honest: I have a deep seated hatred of my mother for the way she tried to make me trust her (and only her) by repeatedly, over many years, undermining my trust in my father, my doctors, my fiance, and myself and the way she used those tactics to try to destroy me when I told her I was going to transition.
I very nearly had to be hospitalized because she convinced me that I was psychotic, and that I was manipulating my doctors. When my doctors said I wasn't psychotic, I didn't trust them because I thought I was manipulating them unknowingly, and my anxiety got so bad I was starting to doubt my ability to test reality and having panic attacks so severe that they felt like genuine heart attacks. I think that was the wake-up call I needed to understand that she had absolutely no qualms about genuinely harming me to bolster her flimsy ego.
So I have an idea: I want to get my orchiectomy done just before mother's day and mail my testicles to her, with a note saying "Happy mother's day, you can have these back." I want her to be so shocked and repulsed and traumatized by this that she feels the pain she put me through. I want her to hurt knowing that I've gotten an irreversible surgery done against her pleadings and there is nothing she can do. I want her to have a physical reminder of how I rejected the gender role she tried to reinforce through psychological terrorism.
Most of all, I want her to know how much I hate her.
Would this be illegal, though? I know there are possible legal issues with sending body parts by mail.