A Jewish man is waiting in line to be knighted by the Queen of England. He is supposed to kneel and recite a sentence in Latin.

When it comes his turn, 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, which he remembers from the Passover Seder: “Mah nishtana ha-lailah ha-zeh mi-kol ha-leilot.” 

The puzzled Queen turns to her advisor and asks, “Why is this knight different from all other knights?