Last night, as I was leaving work, a man looked right at me and said, "Roy?" I ignored him and kept walking, but he continued to call after me, "Roy? Roy!" I went down into the tube station, but realised I'd forgotten my book on my desk, so went back up. As I emerged, he ran towards me: "Roy! Roy!" Once again, I ignored him, but when I left the building he was there again, waving to me from a parked car, "Roy!"

I quite like the thought of having a doppelganger, but does he have to be called Roy?