Many years ago, a young father in his twenties was getting in trouble with the law because of repeated inappropriate exposure of his genitals in public. He also had explosive outbursts with destruction of property. During the first sessions with him, I was struck by his juvenile, almost child-like expression, with incongruent affect regarding his behavior, probably stemming from a lack of insight. His poor ability to deal with frustration, to regulate anger and impulses indicated some form of developmental arrest. Months (and another child) later, after gradually investigating his past and trying to understand what had led to his dysregulated sexuality, he eventually disclosed that when he was a child, his dad made him watch pornography. It was disturbing to try to imagine the effect of potentially overwhelming, arousing but also degrading images on a forming, innocent brain. Unlike erotic scenes in a movie or nude sculptures in a museum, pornography generally involves power dynamic, humiliation and a distortion of the reality around body and sexuality. In my opinion, it is a form of sexual trauma, just like witnessing a car accident or parental domestic abuse can be traumatic for the observer.