Mulla was trying to take a nap, but a fly kept buzzing around him. He caught the fly, ripped off one of its wings, and set it down. It buzzed around in circles. He caught it again, ripped off the other wing, set it down, and commanded, "Fly!" The fly just sat there. Mulla nodded to himself. "It is scientifically proven: if you remove a fly's wings, it goes completely deaf."