I can't remember how I learned about all that stuff. Not very effectively, as I remember sitting in middle school when I was 10/11 watching a sex-ed video in class. There was an illustration of a naked couple and the narrator said: "...and the couple hold each other intimately, and the man's penis gently slips inside the woman's vagina - completing the act of sexual intercourse."

When you're ten years old and that's the first information you're getting - there's a problem. And I grew up in a nice liberal part of the south of England, not somewhere zealously ultra-conservative. I know for a lot of people the adventure of discovery is a thrilling rite of passage. But then you get others who grow up not knowing what goes where and learning it all from internet porn.

When I have kids, if I'm lucky enough to have the Stork bring me some, they'll be sat down and getting the talk at the first sign of curiosity. I'll want them to grow up with knowledge and without shame. Poor sex education (and the negative ramifications of that such as high rates of unwanted pregnancies) is 100% the result of prudish adults who took that bit in Genesis about fig leaves a bit too literally.