'Oh God no, it's a family show. Perhaps there might be a DVD for the over-18s, you're not going to see any of that funny flirty business in the Tardis. River Song was conceived on the Tardis. It’s kind of insinuated, but never actually said. They did well to have sex because Amy and Rory have bunk beds on the Tardis. The Doctor finds it funny because it’s a bed with a ladder.'