What do you mean when a girl tells you to be careful not to get robbed on the road?

First, just kidding, enliven the atmosphere and make you laugh, probably to see if you are cute or good-looking, Doby.

Second, maybe you are too thin or too easy to bully, and then you look good, and the girls nearby are stronger, probably stronger than you look, and you can't beat others, and then say,

Third, it is possible that something similar happened nearby or recently before she told you.

Generally speaking, the first one is more likely. Do you think the girl smiled after saying this sentence, or just smiled after telling the truth? If she does, it's the first one. It's a joke. If it is serious, it will be two days later. Then you will find that you want to exercise and let girls say these things.