Before Paddy goes to war he fits a chastity belt on his wife. He locks it and gives the key to his best friend Fergus.
“If I’m not back within 4 years, open and enjoy!”
He hops on his horse and hits the road.
Half an hour later he noticed a dust cloud behind him.
He stops and sees that it is Fergus.
“What’s wrong?” he asks.
Out of breath, Fergus answers: “It’s the wrong key!!”