There is this guy at the gym I go to. He is rather built but he seems indecent to me. In the locker room he stood by me when I was sitting and his member was fully sticking out of his shorts (his short were really small). He was doing squats and his crack was exposed to everyone. He was also in the bathroom stall next to me masturbating. I told him to stop but he didn't listen and ignored me. He then made a bowel movement and started moaning loudly, and later started walking around in the locker room without a towel. Should I report this guy?