If you live in a huge city or other tourist destination, this is an effective neg to use on women: “Where are you visiting from?”
If she is actually a tourist, you can make conversation with her about her visit. She will first ask you how you could tell she was a tourist, and the clever among you can create an entire routine based on this neg. (I have my own routine, and will share it with you if you send me a good one.)
Most of the time, however, the girl will be a local. They all answer the same way, “Why do you think I’m a tourist?!” Again, you can create an entire routine around this neg.