And I was dressed as I often am, in a long black duster that comes past my knees, and a broad-brimmed black hat. At the time, I was wearing my beard on my cheeks, instead of just the goatee I have right now.
Anyway, as I was standing and musing, a hand touched me on the shoulder, and someone asked me a question in Hebrew.
I turned around, and the person who had touched me blinked, backed up, and apologized. I was amused.
He was wearing the clothes and had the hairstyle of an orthodox Jew. From the rear, he had assumed that I was one as well.