A woman who wandered Bologna in the nude last month explained her stunt in a video released Thursday.In the video, taken on the same day as her naked tour, the 26-year-old from Val d'Aosta told some young men: "It's a social experiment, to show that we're all good people"."You are good, aren't you, boys?".The woman was fined 3,300 euros for flouting public decency on July 27.