Back in the time of the Samurai there was a powerful emperor who needed a new head Samurai so he sent out a declaration throughout the country that he was searching for one. A year passed and only 3 people showed up: a Japanese Samurai, a Chinese Samurai and a Jewish Samurai.
The emperor asked the Japanese Samurai to come in and demonstrate why he should be head Samurai. The Japanese Samurai opened a matchbox and out popped a little fly. Whoosh goes his sword and the fly drops dead on the ground in 2 pieces. The emperor exclaimed: "That is very impressive!"
The emperor then asked the Chinese Samurai to come in and demonstrate. The Chinese Samurai also opened a matchbox and out popped a fly. Whoosh, whoosh goes his sword. The fly drops dead on the ground in 4 pieces. The emperor exclaimed: "That is really very impressive!"
The emperor then had the Jewish Samurai demonstrate why he should be head Samurai. The Jewish Samurai also opened a matchbox and out popped a fly. His flashing sword goes whoooooooossshhh whooooossshhh whooooossshh whooooossshhh. A gust of wind fills the room, but the fly is still alive and buzzing around.
The emperor, obviously disappointed, asks: "After all of that, why is the fly not dead?" The Jewish Samurai smiled, "Well, circumcision is not intended to kill."