Ohhhh I still remember this as one of the most satisfying and educational experience of my life.

I was maybe 11 y/o at the local pool.
For some reason one boy, bigger than me, got angry at me. (No knowledge of why)
He came up and started punching me under the water.
I looked around and no one to tell, nothing I could do.

It hurt, but it didn’t really hurt that much, so I just pretended I did not even notice him. I stayed there for a while while he punched me (under the water is tough to punch hard, so it did not hurt much). I got out of the pool, and jumped back in right next to him.

He started punching me harder. I still pretended I did not even notice.

I went out and jumped in again nearby him.

He punched me even harder becoming more and more frustrated. I had realized that I had the power as long as I do not give it to him. It was starting to hurt, but the pleasure of being in control was way too satisfying.

I repeated this a few more times, completely ignoring his existence and he became more and more angry and I became more and more satisfied.

At some point a life guard noticed and called to him to stop, giving him an excuse to stop, but with the rush I was feeling, I could have gone all day being punched. Even if it hurt, I had realized that not acknowledging him hurt him more than his punches hurt me.

One of the most vivid memories of my childhood.