I’ve sometimes wondered about this, although in full disclosure I can’t say it had any negative affect on me at all. But, I do remember it quite well after many decades, and it was only after many years past that it ever occurred to me that it might have been some form of sexual assault.
Sophomore year in HS (I’m 14), and we’re in gym class. We’re doing some sort of timed run that day, and only a few guys at a time can do the run so there is a lot of milling around. I’m already done and am shooting the breeze with my best friend, who was in my same class.
Coach* comes over and chats with us a bit. Then, out of the blue, he sort of loops his thumb over the waistband of my shorts. This is at my hip, so he’s not actually touching any “private area”, but it’s not that far away, and his thumb was inside my clothing. My reaction was pretty much to freeze, mainly because it was very sudden, and I didn’t especially want to draw attention to myself. The whole episode lasted maybe 10 or 15 seconds.
No one ever said anything to me and I never said anything to anyone else. I can’t say it bothered my a lot (but then, no one saw it or said anything to me about it), but it was… puzzling. And “puzzled” would be the best way to describe the way I felt at the time, since it was an odd thing to do. It would never have occurred to me to report this, but I wonder if in this day and age, he would have been guilty of some sort of sexual assault.
Also, Coach was not known to be any kind of predator or anything. There were always rumors about certain teachers that you knew to “stay away from”, but coach wasn’t one of them. And nothing ever happened again.
OTOH, I’m thinking: Well, I didn’t feel like I was assaulted, so it’s not sexual assault. Like I said, I was basically just puzzled.
OTOH, when you’re 14, you don’t necessarily understand all the ins and outs (no pun intended) of sexual assault, even if very minor-- and I’d call this minor, if it was indeed assault.
*We always called him Coach, and I don’t remember what his name was anyway.