Your stories, my story

Hi guys, I'd like to have a good feedback on this post, cause I really wanna know your "story" .
Except for girlfriends, wifes, or sessions with mistresses, what is the best experience you had with this fetish?

Except gfs, wifes etc because it sounds too mainstream.
I will go first, of course.
In a birthday party, i was in a room with other guys. We were all drunk. I started to "play" with this beautiful girl beside me, cause she started throwing me a pillow. I took a plastic empty bottle, and i hit her forehead with that (very soft). We were in a weird position after a little "brawl": she had only to lift her knee to hit my balls. As I said we were drunk and the pain was not too much, I didn't groaned or flinched, so she gave me another one knee, and again and again. After maybe 4/5 knees to my balls, and after no reaction by me, she said (no one was listening, music was loud): "omg u don't have balls".
I am really in shame with this fetish but I was drunk and i wanted to "carpe diem".
"Yes I have, look"
I grabbed my pants on my groin to let her see the shape of balls, and them were too exposed to not being crushed for her.
She gave me one solid punch in the balls (the hardest I had so far, I mean, she was drunk, teased by me, i saw in her face that she was working hard for that) followed by a huge laugh from her. She left me in agony on the sofa for a while, with an incredible boner, but nothing more :/

What's your best experience?