A guy stuck his head into a barbershop and asked, "How long before I can get a haircut?"

The barber looked around the shop full of customers and said, "About 2 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 very full waiting area and said, "About 3 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 a half."

The guy left.

The barber turned to his 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. He must be going some place where he doesn't have to wait."

A little while later, the barber's friend Bill returned to the shop, laughing hysterically.

The barber asked, "So, where does that guy go when he leaves?"

Bill looked up, wiped the tears from his eyes and said, "Your house!"