Look up phimosis. It’s pretty common from my understanding but I had to get circumcised a few years back from it. Starts with a bit of tearing around the opening of the foreskin which will eventually turn into scar tissue. Then things start getting painful. You can make cranking your hog not painful, but sex and even just full erections were painful.

I do miss my little hooded member, sex doesnt feel the same way as it used to, and I don’t last as long in bed but hey… no more pain and split foreskins these days!