A guy stuck his head into a barber shop and asked, "How long before I can get a haircut"?
The barber looked around the shop full of customers and said, "About two hours."
The guy left.

A few days later, the same guy stuck his head in the door and asked, "How long before I can get a haircut"?
The barber looked around at the shop and said, "About three hours."
The guy left.

A week later, the same guy stuck his head in the shop and asked, "How long before I can get a haircut"?
The barber looked around the shop and said, "About an hour and half."
The guy left.

The barber turned to a friend and said, "Hey, Bill, do me a favor. Follow that guy and see where he goes. He keeps asking how long he has to wait for a haircut, but then he doesn't ever come back."

A little while later, Bill returned to the shop, laughing hysterically.
The barber asked, "So where does that guy go when he leaves"?
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Bill looked up, tears in his eyes and said, "Your house."