Because there's a silent, shrugging, stoical acceptance of all the things in the world we can never be part of: shorts, swimming pools, strappy dresses, country walks, roller-skating, ra-ra skirts, vest tops, high heels, rope climbing, sitting on a high stool, walking past building sites, flirting, being kissed, feeling confident. And ever losing weight, ever. The idea of suggesting we don't have to be fat -that things could change -is the most distant and alien prospect of all. We're fat now and we'll be fat forever and we must never, ever mention it, and that is the end of it. It's like Harry Potter's Sorting Hat. We were pulled from the hat marked 'Fat' and that is what we must now remain, until we die. Fat is our race. Our species. Our mode. As a result, there is very little of the outside world -and very little of the year -we can enjoy. Summer is sweaty under self-conscious layers. On stormy days, wind flattens skirts against thighs, and alarms both us and, we think, onlookers and passers-by. Winter is the only time we feel truly comfortable: covered head to toe in jumpers, coats, boots and hat. I develop a crush on Father Christmas. If I married him, not only would I be expected to stay fat, but I'd look thin standing next to him, in comparison. Perspective would be my friend. We all dream of moving to Norway, or Alaska, where we could wear massive padded coats all the time, and never reveal an inch of flesh. When it rains, we're happiest of all. Then we can just stay in, away from everyone, in our pyjamas, and not worry about anything. The brains in jars can stay inside, nice and dry.