A Jewish man was waiting in line to be knighted by the Queen of England. He was supposed to kneel and recite a sentence in Latin.
His turn comes, he kneels, the queen taps him on the shoulders with the sword ... and in the panic of excitement he forgets the Latin line. Thinking quickly, he recites the only other line he knows in a foreign language, one he remembers from the Passover Seder:
"Mah nishtana ha-lailah ha-zeh mi-kol ha-leilot." The puzzled Queen turns to her adviser and asks, "Why is this knight different from all other knights?"