Stanislaw Podgnowski was a newly immigrated junk dealer in Chicago. One day he picked up an old oil lamp, brushed it and out popped a genie!
"You may have three wishes, what is your first wish?"
After some consideration, Stan says, "I want a horde of Mongols to invade Poland"
"Your wish is my command", "It is done, what is your second wish?"
Stan thinks some more. "I want oa horde of Mongols to invade Poland"
"Again?"
"Yes."
"It is done, oh strange one, what is your third wish? But before you answer, I must remind you that after this wish we are done and I will not be able to undo what you have already done."
Stan thinks long and hard and says, "I want a Mongol horde to invade Poland."
"It is done, but why on earth would anyone want a horde of Mongols to invade their homeland three times?"
"Because they had to cross Russian SIX times to do it!"