Unexpected Discovery

When I was a kid I happened to see something which I shouldn’t have. It was just after school when I went back to the locker room to get my gym uniform from my locker to take home and wash.
There was nobody there, of course. Or at least I didn’t think that there was. That was when I saw one of the coaches and a boy named Richard, who was this football star and very popular, and who was several grades ahead of me. They were in one of the locker alcoves. Richard was naked and leaning over one of the wooden benches, and the coach was standing behind him with his shorts down, and he was butt fucking him.
I was amazed by this sight and couldn’t believe it. Richard had this huge boner and the coach was sticking his dick into his butt and fucking him. They didn’t see me and I very quickly left, just feeling astonished by what I had seen. I never told anyone, but after that it was kind of strange whenever I saw Richard and with me knowing what he did, and when I saw the coach thinking how he butt fucked students. It was really just one of those things that goes on as I learned at the time.