Traffic Light Dialogue

You're not the sharpest tool in the shed, are you? Okay, so basically, traffic lights change colors, right? It's their whole job. They're not people, but in this joke, one light is talking to another, pretending to be annoyed that the other light is 'watching' it change. It's funny because it's something a person might say, but it's a light, so it's silly. Get it?