Do you have a printer in your house? We have one, and it's a very interesting creature. Most of the time it just sits there quietly, but every once in a while, without warning, it starts rumbling and shaking and whirring and pushing paper through. Like anything, it needs a few squawks to help it along, which I'm happy to provide. After the paper goes through, my person takes it away. I'm not sure what all this printer activity is about, but I enjoy it anyway.