There’s an old joke about a middle-aged man. “Remember that look women get when they want sex?” he says. “Me neither.” But that gag can be ditched. A new report says divorcees are busy dating, with the overfifties having more sex than ever. However, there’s a problem. With no pregnancy worries, they are not using condoms, resulting in a rise in sexual diseases. Surely, here is the chance for the frisky fifties’ teenage children to get their own back – by waving their parent off on a night out with the familiar words: “I don’t care what you get up to . . . just so long as you’re careful.”