Through the center of old Czechoslovakia there's a train speeding along.
In one compartment of the train there are four people.
A beautiful vivacious young woman, an old matronly woman, a Russian soldier, and a Czech dissident. Suddenly the train goes through a tunnel. It is completely dark.
When the train exits the tunnel, the Russian soldier is holding the side of his face, and the Czech dissident is grinning madly.
The old matronly woman thinks: "Now that's a fine young woman, the Russian soldier tries to steal a kiss in the tunnel and the lady slaps him one!"
The young woman is thinking: "Now that's a strange Russian soldier, he'd rather kiss that old hag than me."
The Russian soldier is thinking: "Now that's a smart Czech, he steals the kiss and I get slapped."And the Czech dissident is thinking: "Gee I'm smart! We go through the tunnel, I kiss the back of my hand and get away with slapping a Russian soldier."