Once, long ago, when a man felt thirsty he could, all by himself and quite unaided and unprompted by lifestyle magazines, daytime TV presenters, and that smug git in the office who goes to the gym at lunchtimes, walk to the tap and pour himself a glass of water. This, combined with a cup or two of tea, perhaps a juice in the morning, and something passable but inexpensive with his meal, was enough to get him through the day. But now he must sit, Evian bottle constantly present, swigging every few minutes lest the feared and mighty dehydration monster attacks him and shrivels his dermis, dries his eyes to spent husks, and allows millions of toxins unchecked access to his pancreatic lining (or something). Swig swig. Swig. Mummy. Another swig.