Search Results: talking to an old friend

So when I was a kid, my brother's friends who were all 2 or 3 years older than me would often pick on me. One, in particular, was sorta fucked up, he would tackle me and dry hump me through our clothes, this was within full view of my brother and my mom on multiple occasions. I blocked it out most of my life but something triggered the memory recently, we happened to be picking him up from his house in my moms' minivan (she was driving), I was like 10 at the most meaning my brother and friends were around 12~13 and I was out of the car so he could get in. He saw me and ran at me, I curled up in a ball as he tackled me, he started humping, I yelled for him to stop and asked for someone to get him off but my mom just sat there as my brother and all his friends laughed at him, went on for I don't know how long but he eventually stopped then we got into the van and before I shut the door he was doing it again, same deal, it felt like an eternity at the time but now it feels like maybe 10 minutes though I'm sure both times are wrong. I didn't understand this for the longest time, but this wasn't normal behavior for someone to display, I remember laughing afterward but I didn't really comprehend what was happening or that it was wrong, only knowing "that's what dogs do to each other", I think I was laughing primarily cause that's what everyone else did and since nobody stopped him then "it must have been okay". I've never spoken to a therapist about this, nor reported him to someone, nor have I confronted my mom or brother about it. It just reappeared in my head one day while I was talking to my friend and she asked if I thought HBO sex scenes made me uncomfortable because of my virginity.