Had it.
That’s why I’m glad mine are just 2 and 3. They know nothing yet of sex. The closest they come to talking about that sort of thing is to say:
3 yr. old boy: I have a peepee and you (to his sister) don’t!
2 yr. old girl: I have peepee too!
And then I have to explain that he has a boy peepee and she has a girl peepee.
Of course, I’ll get to be asked such questions as yours ask in about 5-6 years.
My mom gave me a book. I can’t remember what it was called… “its a girl thing”, or “girl talk” or something like that… but it was extremely graphic. I remember bringing it to school for show and tell… BIG mistake.