Couple thoughts. Because of work I have had to help some women navigate some ugly Cyber-abuse situations. It's important to point out that the first thing you NEED to do is send a quick message to the person asking them to "stop and never contact you again". This is legally important as you can't get a restraining order without a threat or the person ignoring your wishes. #2, Dick pics are like getting in a fight at 2:00 am in a bar. It's a misguided sign of virility. As an adult male I can confidently say until we are 30ish we are far too stupid to understand women don't like this practice.