A Wehrmacht officer decides to amuse himself with one of the prisoners held in the Belsen concentration camp.He approaches the man and makes an offer; "I have a glass eye.If you can guess which one it is then I'll let you go free." To which the prisoner replied almost immediately "It's your right eye." The officer, surprised at the speed and surety of the man's answer asks "Amazing! How did you know?" "It's the eye with a kind expression in it."