A Pole finds a magic lamp, rubs it, and out pops a genie. He's given 3 wishes.

"For my first wish, I want Poland to be raided by the Mongols".

The Mongolian horde arrives after a month, burns and pillages the countryside, and then they go home.

"For my second wish, I want Poland to be raided by the Mongols"

Another month passes, and then the horde returns, burning and pillaging all the villages that had barely had time to be rebuilt. The genie asks:

"I think I know what your third wish is going to be. My question is: why? What have your countryman done to deserve such a thing?"

"We may be raided 3 times, but the Mongols have to go through Russia 6 times!"