Good one.
I had a similar thing happen to me.
I was outside on a sunny evening washing down my car on the street.
This guy approaches me and proceeds to tell me his car broke down on the DVP. Would I be able to give him 2 dollars to take the subway?
I said, hold on, I'll just finish off here and give you a ride.
Well, then he said he would go to a pay phone to call his dad. When I came back he did not want the ride. I figured out later, when I had time to think, he never wanted a ride, he wanted the 2 dollars.