My own dad passed away when I was six and my mom re-married when I was eight. My three brothers and I were not circumcised and our new dad insisted we get cut.
I was nearly nine when it happened and a few weeks after, when the discomfort disappeared, I started getting frequent hard ons when I noticed my new cut dick rubbing against my pants, which was quite intense as I didn't wear any underwear as a child. (Don't know why my mother never bought us boys any underwear as kids). A couple of months after being cut, getting home from school with my dick feeling extremely sensitive from all the rubbing, I started squeezing it and it felt very good. I kept on squeezing and after a few minutes I had my first dry orgasm.
This became a habit virtually every day after getting home from school, and as time went by I discovered the more conventional ways of masturbating. I am 48 now and over the weekends I often go without underwear to get that same sensitive and randy feeling, although not as intense as it was when I was still a boy.