Quoting crazy coupon lady:" Same here. My kids are 4 and 10 and know what sex is, not all the details about it, but they know what ... [snip!] ... know what it is etc......they learn grade 4 here too, but the kids here are 9 in grade 4. I taught my kids about it early on."
I can't recall how I old was, but before I was 10 I found a used condom outside. I brought my mother to it to ask her what is was and she sat me down to explain sex, very briefly. Penis, vagina, it's not okay for strangers to touch you there
. I grew up in a crappy area so I think it was smart on my mother's end to make sure I had the knowledge to know what was okay and not okay. Even if we had not lived in the ghetto I believe it would have been wise for her to go over the basics with me at a young age.