Toss it away from you.... chances are that he is more interested in your wallet and/or purse than you and he will go for the wallet/purse.
RUN LIKE MAD IN THE OTHER DIRECTION!
Got this in an email today. Most of the content the email I'd read before, like - what to do if you get locked in the trunk of a car... This part was new to me, though. And I good suggestion, I think.