I never really had the "sex" talk, at 5 I asked my SIL about "the rope attached to the baby" (I'd seen a pic of a nearly full term bub in the womb - she gave me the whole shebang talk, probably a bit too graphic coz it grossed me out BIG TIME, but I took in as much as was relevant to me at the time, same SIL gave me the period talk when I got mine a month before my 8th birthday.

I knew the mechanics of the human body, I knew the external differences between male and female as nudity was normal in our household, so I'd seen my brother & my father naked.

I do remember having the "sex" talk at school and me getting sent out of the class because I was being a bit too graphic for what the teacher was trying to tell the class.

I remember just before my eldest nephew went to schoolies, I got permission from his friends parents and did a sex talk for them, more along the lines of condoms, how to put them on, STIs etc - I was an educator and home care worker for the aids council at the time so borrowed their education unit. Some of the boys thanked me after they got back from schoolies because I'd de-mistified it for them and they were prepared when they did have sex during schoolies.