Three spies get captured. One spy is French, one is German and the other is Italian.
Their captors come into the cell and grab the French spy and tie his hands behind a chair in the next room. They torture him for 2 hours before he answers all questions and gives up all of his secrets.
The captors throw the French spy back into the cell and grab the German spy. They tie his hands behind the chair as well and torture him for 4 hours before he tells them what they want to know.
They throw him back into the cell and grab the Italian spy. They tie his hands behind the chair and begin torturing. 4 hours go by and the spy isn't talking then 8 hours, then 16 and after 24 hours they give up and throw him back into the cell.
The German and French spies are impressed and ask him how he managed to not talk. The Italian spy responds,
"I wanted to, but I couldn't move my hands!"