Because of the taboo on torsal nudity, it is worse to overheat if you are a woman than if you are a man, and the last few weeks in London have been abominable. It isn’t just too hot for the British, with our reptile blood and undeveloped hearts – it is too hot for anybody. What’s that faint sound, wafting on the wind? Lo, it is the rub of thigh upon reddened thigh, the trickle…