来源：互联网 2016-10-15 21:04
Once there was a blind.
One day when he was walking, he stepped the head of the dog who was sleeping.
The dog barked for a while.
The blind man went on for miles, this time he stepped the other dog's tail, so this dog barked.
The blind man had thought that it was the first dog, so he said in surprise, It's a wonder that the dog is so long.