 Like most Americans, I like a king-size bed. But last week, mine was in the shop, so the dealer loaned me a sofa bed. You know, one of those pretty little convertible jobs? The kind with the optional piping trim and tasseled throw pillows? Oh, sure, they're nice, but how do you get them open? Mine got stuck the first night. I pushed and pulled, and then I did like I do with most mechanical things. I gave it a good swift kick.