The cannibal logic teasers reminded me of this one: The scene: you are captured in the middle of a desert, it is the middle of the day, sun shining, and you are all sweaty, sticky, thirsty etc. The smell of camels is overwhelming and the desert dust is causing your eyes to sting. Your fate: Your capturers have told you, in the leather bag are 9 (yes nine) black billiard balls and one white cue ball. You will be be blind folded and then you can choose one ball. Should it be white you are free to go, should be black ..... Your last wish: You have one wish which will be fulfilled - what is it so you can go free.