Our neighbours two doors down were in their hot tub at 6.30 this evening when they started having incredibly loud sex for about 15 minutes (primarily her moaning 'oh god' leading up to her pretty much screaming). We were in the garden with our 4 year old and had to take him inside as he was asking a lot of questions about the sounds. I'm quite disgusted that someone would think that acceptable at a family friendly time of day. A friend suggested an anonymous note telling them I don't wish to be involved in their sex life, but they have a ring doorbell so it wouldn't be very anonymous. How do I get the message across for them to get a room without causing red faces all round?