Db and his gf (sil for the purposes of mn) have been together for a couple of years. I think they met on the internet and share a group of mutual friends who enjoy the same sexual practices. They are always mentioning how they are into sub/dom stuff, bondage etc. Recently they were telling us all about a wedding they went to and then showed me a video of the dancing where half the people were naked, though not sil (db was filming!), this led to db going on about how this is great and how he knows all the names of the naked women! I'm not being prudish, I love naked, but I don't want to know so , much about their sex lives.
To add insult to ewwwness then sil goes on about how dh and I are innocent, we don't need to be sullied by all of this information! As if dh and I are 12! I am aware of a wide range of kinky sex stuff and as long as it's consensual then thats fine but I don't want to hear any details of their sex life, nor do I feel it necessary to share mine. Aibu?