One day an elderly Jewish Pole, living in Warsaw, finds an old lamp in his
attic. He starts to polish it and (poof!) a genie appears in cloud of smoke.
"Greetings, Mortal!" exclaims the genie, stretching and yawning, "For
releasing me I will grant you three wishes."
The old man thinks for a moment, then replies, "I want Genghis Khan
resurrected. I want him to re-unite the Mongol hordes, march to the Polish
border, decide he doesn't want to invade, and march back home."
"No sooner said than done!" thunders the genie. "Your second wish?"
"Hmmmm. I want Genghis Khan resurrected. I want him to re-unite the
Mongol hordes, march to the Polish border, decide he doesn't want to invade,
and march back home."
"But... well, all right! Your third wish?"
"I want Genghis Khan resurrected. I want him to re-unite his ---"
"OKOKOKOK! Right. Got it. Why do you want Genghis Khan to march
to Poland three times and never invade?"
The old man smiles. "He has to pass through Russia six times."