This happened several times to me when I was teenager. One time, the policeman started by asking me if I lived in this area. I said yes and he tested me, saying "what's the name of these two blocks behind me?", and, I could name those to him. Then suddenly he shifted to telling me that he knows fortune telling and told that my face is the fortune type of face esp with my nose, etc....
ANother time, the policeman checking my ID just took a look at the ID and asked, "what nice photo you have taken for your ID, tell me which district immigration office you processed, and I'd like to go there to process mine too." I was so angry as I was hurrying for my business too.
But this won't happent o me anymore in these recent 10 years. MAy be I am not young anymore la!