A little old Jewish lady is flying out of New York City on her way to
Miami Beach.  She looks at the businessman sitting next to her and 
asks him, "Excuse me sir, but are you Jewish?"

The man responds politely, "No, ma'am, I'm not Jewish."

After a little while she again queries him, "You're really Jewish, 
aren't you?"

Again he responds, "No ma'am, I am not Jewish."

Barely 10 minutes later, the little old lady asks him once more, "Are 
you sure you're not Jewish?"

To which in exasperation, and in a final effort to shut her up, he 
replies, "Okay. Yes, ma'am, I am Jewish."

    "Funny," she says, looking puzzled, "you don't look Jewish!"