i think i was 10 or 11. we moved into a house that had a huge full length mirror in the bathroom i shared with my sister and it made it quite easy to check things out and i was mighty curious.
Dang, people still remember my thread from a year ago? Before I started that thread, I thought it was normal for people not to have seen themselves naked. What can I say? I was raised with strong senses of Lutheran guilt and modesty.
I looked at mine when I was little, not sure what age. I’ve just always been very familiar with my own body. I can’t imagine it any other way.
Never have.
No real reason for that 
Just never occurred to me. But then I generally don’t inspect my lower back either - for much the same reason. It’s doing its regularly appointed job and isn’t particularly convenient to view.
Although, as there have been no comments from persons who have seen the show, I’m presuming all girly bits are present and accounted for.
Come to think of it, I should probably have a gander one of these days.
Someone please tell me I’m not the only one who read this as “…have a gender…”?
I actually remember being flexible enough when I was little that I could bend over and see my girly bits, and actually saw that there were two holes myself. Then I asked my mom, “If I had twins, would one baby come out one hole and the other baby come out the other?”
I’ve looked in a mirror a few times, and taken pictures with my digital camera.