[Random orthodox-ly dressed Jewish guy on street corner]: "Excuse me, are you Jewish??"
[Me, walking by and chuckling to myself]: "Sorry, no..."
[Aforementioned guy]:"Oh, okay then. Nevermind."

Two minutes and one block later...

[New random orthodox-ly dressed Jewish guy on new street corner]: "Excuse me, are you Jewish??"
[Me, chuckling significantly more]: "Sorry, no..."
[New aforementione guy]: "Oh, okay then. Have a good day."
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Only at Yale on (near?) the high holy days.