Wearing a skirt implies consent. Clothes (or lack of them) are a form of communication. For example, my well-endowed wife wears revealing clothes if she feels comfortable with the attention and if it is an appropriate time to do so. On the other hand, if she has a business meeting at the office (especially important during meetings with people from other cultures), she will never do so, because that way she would send an inappropriate message. In this way, she takes responsibility for her behavior.