In another frank look at the world of sex, the show visits York High to teach pupils about male puberty. And Anna Richardson shows some parents how easy it is to log into online chat rooms that feature shocking conversations and content. The kids at York High visit a fertility clinic to see how artificial insemination takes place and witness the moment life is created. More results from the series' sex survey reveals how regularly Brits have sex, which parts of the country are experiencing a dry spell... and how many people use handcuffs. And Jonny and Amelia, who both have impaired vision, talk about their lives and how being visually impaired needn't get in the way of a great sex life.