A guy stuck his head into a barber shop and asked, "How long before I can get a haircut?" The barber looked around his shop and answered, "In two hours." The man quickly departed.
The next day, he turned up again, stuck his head into the shop and asked, "How long before I can get a haircut?" The barber looked around his shop, counted the customers he had and answered, "In about two hours." The man quickly left without saying a word.
On the third day, the guy again came into the barber shop and asked, "How long before I can get a haircut?" This time the barber answered, "In half an hour." The man then hurriedly left the shop.
By now the barber was very inquisitive, so he asked his assistant to tend the shop while he secretly followed the man to see where he was going.
He was shocked to see the man going straight for his house. The man nervously looked left and right while he pressed the bell. Hiding in a corner, the barber saw his wife open the door and heard the man say, "Quick, we only have thirty minutes."
