Paddy was visiting London for the first time. He wanted to see the Houses of Parliament. Unfortunately, he couldn't find them, so he asked a policeman for directions.
The policeman said, "Wait here at this bus stop for the number 54 bus. It'll take you right there."
Three hours later the policeman returned to the same area and, sure enough, Paddy is still waiting at the same bus stop.
The policeman got out of his car and said, "Excuse me,to get to the Houses of Parliament, I said to wait here for the number 54 bus. That was three hours ago. Why are you still waiting?"
Paddy replied, "Don't worry, officer, it won't be long now.