What’s funny to me is how vulnerable he was, but I don’t understand exhibitionism. I bet he was doing it for you or your mother. Did you not have a father? To me, exposing him would have shamed him. Playing some kind of continual laugh track would have put me in a cold and clammy reality. Women, like you, are powerful. You announce and put into perspective things that are off. I have no idea how he “got off” without any punishment, except of course he had other problems that eventually did him in. I am thinking he hoped he turned you on. Is it like, he thought, the effect of a strip tease, as in “Come join me?” An article in Psychology Today said, “He is engaging in a form of flirting… Risk factors for the development of exhibitionistic disorder in males include antisocial personality disorder, alcohol abuse, and an interest in pedophilia. Other factors that may be associated with exhibitionism include sexual and emotional abuse during childhood and sexual preoccupation in childhood,” (https://www.psychologytoday.com/us/conditions/exhibitionism). I am sorry you had to go through that. I dated a woman, who had us naked and having sex in my bay windows fronting a busy intersection and directly across from a major train station. She is one of these long-haired ballerinas. She is absolutely gorgeous, so as far as I was concerned, she could do no wrong by it, but I felt absolutely small and uncomfortable because I had to face them. Oddly, like you, no one seemed to notice or pretended not too. We were on the second floor so perhaps no one actually saw anything. But, it was rush hour and all the lights were on. Weird, she is the one I still pine for, but that particular experience rattled me. I am a very private person.