"Everybody talks about the weather, but nobody does anything about it," he said. "Until now. My invention can change the weather. Just aim it at the sky and push a button. There are buttons for Rain, Sun, and Snow." His wife said, "That sounds too good to be true. How do you know it works?" He said, "Well, it works in theory. Let's go outside and see if it works in the real world." They went outside. It was a sunny day. He pointed his invention at the blue sky. He pushed the Rain button. The sky turned black. It started to pour. The streets started flooding. She yelled, "Turn it off! Turn it off!" He said, "I can't. I forgot to install an Off button." She yelled, "Push the Sun button!" He did. The sun came out. The sky turned blue. "We're going to be very rich," he said.