In April the US actor Milo Ventimiglia, star of This Is Us, was photographed leaving the gym in a sleeveless vest and a pair of shorts so short you could barely tell they were there: two thumb-sized rims of black material gave way to legs so round and meaty they could be shoved in the oven for three hours at 180C. It was one innocuous paparazzi photo that broke a dam of desire. The image was...