I personally would be scared to take this approach. Some people don’t take rejection of any kind well and go even more “crazy” if that happens. I wish the world were different but the reality is that as a woman we have to have our guard up. In my experience when traveling (28+ countries) it is best to absolutely not even look at them (do NOT make eye contact, just be aware of where they are physically) and they will move on. Also crazy doesn’t mess with crazier. If you speak another language you can respond in it or legit gibberish and they will leave.