This guys sticks his head into a barbershop and asks “How long before I can get a haircut?”. The barber looks around the shop and says “About 2 hours”. The guy leaves.
A few days later the same guy sticks his head in the door and asks “How long before I can get a haircut?”. The barber looks around the shop full of customers and says “About 2 hours”. The guy leaves.
A week later the same guy sticks his head in the door and asks “How long before I can get a haircut?”. The barber looks around the shop and says “About an hour and a half”. The guy leaves.
The barber looks over at a friend in his shop and says “Hey Bill. Follow that guy and see where he goes”. In a little while, Bill comes back into the shop laughing hysterically. The barber asks “Bill where did he go when he left here?”. Bill looks up and says “To your house”.