Nothing. This idiot is the reason San Francisco passed a total nudity ban in 2014. The guy and the other half-dozen like him are exhibitionists, not nudists. They get off sexually by being seen by women. Which by itself I don't have a problem with. But they did so much of it that they began annoying the local business people. They took a good thing and overdid it to the point where they ruined it for everyone else. And again, it wasn't a whole lot of people, just this guy and about six others who apparently had nothing more to do with their time than walk around the Castro District naked for their own sexual pleasure. What a putz!