I am 20 years old. I hate my testicles and keep punching on them.

But how can I always hurt her?

While there are many ways to damage testicles many are more into the pain felt from CBT activities. Books have been written about self inflicted punishment. having enjoyed the sensations and feelings over many years, I can relate to your goal. But perhaps before you do permanent damage to your testicles it might be beneficial to get to the reason why you hate your testicles. I strongly urge you to seek professional help. I think you will discover you are not alone or abnormal for your thoughts. It s more common than you think.

I do not see myself as a real man.

I am a sub gay.

I do not need them (balls)

This idea of getting castrated seems to be getting more popular among young gay sub men. But lots of tops love enjoying a subs testicles in sex and in dominating and controlling their subs. You will lose a lot of great options and sub activities and enjoyment with no balls and so would all of your dom men.

Haha, big master

how?

All S and M is full of endless ideas for enjoying a sub s dick and balls. Just look up cbt and ball busting for endless ways your tops can enjoy your functioning balls to the max ! Losing them would take those all away from you and your top men.