This guy sticks his head into a barber shop 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 at
shop full of customers and says, "About 2 hours." The guy
leaves.
A week later the same guy sticks his head in the shop 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 the 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 looked up and said, "To your house."