Three prisoners were blindfolded and given a shovel.
The sick and twisted guard told the three men: “No matter what happens tonight, at least one man is certain to die. However, it will not be the man with the deepest grave. But, if any of you begin to dig, only the man with the deepest grave will survive. If none of you dig, only one man will die.”
With no murders or suicides, the three prisoners survived the night.
The guard’s honest husband, who was just as twisted, said the guard was always truthful. How can this be?