Thanks for all the discussion and comments.
After thinking about it, I realize that real clothing and department stores carry lingerie, and have underwear and sleepwear on mannequins for display. And yes, my kids have been with me to stores. So, now that I have thought more, it does seem reasonable for such stores to be G rated.
A few other comments:
1. I am not a troll.
2. My son is 12, will be 13 in a few months. He has never operated my avatar, but was sitting beside me doing homework (I was helping from time to time).
3. I do not think that all, or even most, of SL should be G rated. There is a place for G, M, and A.
4. I didn’t realize that G rated areas were so dangerous (even though I know that bad things can happen in RL). So I will not let my son see the computer screen when I am on SL.
Now a question:
I understand that at 13 my son can get onto certain kid areas of SL through a "sponsoring organization". Is this safe for kids? How do I find such an organization? All this is assuming that he is interested in trying it out.
Mary