Armor

Back in the unhappy days when Czechoslovakia was under Soviet domination, a valiant freedom-fighter was wandering through the Czech countryside, trying to evade a Soviet agent who was in hot pursuit. He found himself near an old castle, and went inside for refuge.

Soon he found that the Soviet agent had followed him into the castle, so our hero slipped into the nearest hiding-place, which was a suit of medieval armor. He remained there, very still, until the Soviet agent gave up in disgust and left him free to continue working for the liberation of his native land.

Why didn't the Soviet agent think to look inside the armor? Very simple: As a well-trained Marxist, he would never consider any such capitalistic lie as that there was a Czech in the mail.