I have defiantly popped one testicle and flattened it out one time. I grabbed a man through shorts who was comming on to me once. I dont think I was really in danger but I used the twist and it took about 2 -3 minutes to rupture a testicle then another 30 seconds to flatten. Looking back as soon as he fell down I actually started enjoying it and it felt great to feel the testicle burst open in my hand. I feel it was a fair punishment and he deserved it.http://womendefendyourself.blogspot.com/2018/04/good-feedback.html
I dont want to say too much more as a police report was filled.
Then the second time I did not get the best grip on the testicle but I thought I felt it go when I grabbed a man in a night club. I dont think I did but I sure hurt him.