Why am I so squeamish watching a vagina puppet?, I ask myself as Emily Morse lifts its clitoral hood and discusses the right way to go down on an enormous plushy. But she is not coy or trying to be cute; she is refreshingly matter-of-fact.

I was taking Morse’s MasterClass on sex because I decided that, after earlyish widowhood followed by a period of fruitless dating, perhaps my technique needed a refresh.