Computerhilfen.com: The blind man's eye

A blind man walked into a bank with his seeing-eye dog that guided him everywhere. He walked into the center of the bank floor, took the dog by the chain, and started swinging him around his head.

One of the bank employees ran up to the blind man and asked, "Sir, what are you doing!?!"

The man turned towards him and said "Oh, nothing - just looking around."