Imagine a balloon squeezed at one end, the other end swelling and - well, ballooning. Paint a face on it and you'd have a first approximation of the guy that sat opposite me on the train the other day. He looked as if his tie was too tight. His eyes seemed to bulge, showing too much white. His face was almost purple. If he'd been frowning you would be concerned about how much fibre he was getting. Smiling beatifically, he stared at a point about two feet above my head and a foot to my right for the whole journey. It may be that his over-starched collar had forced his head into this position and he couldn't move any more. I surmised that he must be on his way to see a doctor, or perhaps a tailor.