@jackh I feel for you man… I don’t think my Nana Lady ever in her life heard anything resembling sex-talk from any of her grandchildren (even though she had like a dozen great grandchildren before she died).
Though there was this one time that my aunts and mother were having a complaining session they were a little too animated (read loud) in discussing. Apparently the Nana Lady had disclosed to one of her daughters some intimate details, which weirded the collective daughters out. They were busy agreeing that parents should never disclose their sex lives to their kids, whilst drinking tea in the room next to our monopoly game (6 or so cousins, and I’m one of the older ones).
I think I was about 10 or 12, and it had never occurred to me that parents keep having sex after their kids are done being made.. so it was really weird and eye opening to think of Nana Lady and Pa as sexual beings.
That overheard conversation is one of the reasons why I’ve never actually expected my parents to be good at the sex talk.