I think this has faded out.
Bizarre but true: My Mamma had no idea where exactly it was, I just found this out a few years ago when we were talking sex. Even though she'd had orgasms from it, as far as knowing where it was physically, she had no idea.
After talking with some older ladies and gents, seems this was just how things were. Most of them said they didn't know until reading books about sex pretty recently. I was shocked.
I don't know of anyone in my age range who doesn't know where it is and what to do with it, but I know when we're younger, women tend to not want to ask or direct much when it comes to sex. Some do/did, but most didn't.
Probably why women in their 20s and over seem to enjoy sex more. Almost every girl I know said as a teen sex was something they did because they wanted to have it, but they didn't find it too physically pleasurable. Crazy, eh?
I had to teach my first about it even though he was older than me and should've known better. I went for about a year though before I got tired of it and finally worked to change it. Teen years, silly, silly times <3
Even now though I hate to be direct and just say, "Do this". I'll just let the sights and sounds guide him and hope he's paying attention which usually works, or incorporate what I want him to do into the 'dirty talk' or a fantasy sesh if I wanna do something different and see if he digs it or not. I doubt I'll ever be one of those people who can just bluntly ask for it.
Never was sure if it's because I'm a woman, but wouldn't be shocked at all if it were.