The Key ..
A knight felt the calling and decided to march in the holy crusades. Concluding that his wife should wear a chastity belt while he is gone, he locks up her nether regions and gives the key to his best friend. He tells him, "If I do not return within four years, unlock my wife and set her free to live a normal life,
I know deep in my heart you are the one person I can trust''
So with a tear in his eye the husband leaves his wife and rides off on horseback .. maybe never to return.
About a 10 minutes later, he sees a cloud of dust behind him. He waits for it to come closer and sees his best friend galloping towards him at top speed. "What's wrong," he asks.
''Sire you gave me the wrong key!"