Off topic, but that happened to me once, as a tourist from Europe visiting San Francisco. Only difference was that the guy who played this routine on me, wanted $15 per shoe. I was a naive 23 y.o. kid, but really entertained because he played me well, so I said "No way man, I'll give you $5 for both!"

Meanwhile his buddy was pressuring him to get going, so the guy was really annoyed with me, but took the $5 and ran off to the guy shouting to him to get into the car. Only later, back in Europe, did I realise how close I could have been to a totally different outcome, so to me life stopped being a given when I realised that. gulp