No, not serious. I remember an episode of Don't Forget Your Tothbrush where a middle aged couple were on a bed inthe studio dressed in bathrobes. And their daughter was in the audience unaware it was them until they turned over from their passionate embrace. She would have been about 18 or 19. Chris
Evans asked the couple various intimate questions and the daughter had to listen to them on live TV. The final question was "what's your favourite position?" and the mum looked straight at her and said "sixty nine."