Not something I expected to have to do quite yet. 
At the weekend I overheard a neighbour's 8 year old DS telling another neighbour's DDs (also 8) what porn is. I didn't hear all of the 'explanation' but I did hear him say 'and then he puts his thing in the woman's mouth'.
This was all in a conversation they were having about sex, 'humping'
and kissing with tongues. All quite normal and innocent I think, apart from the porn part.
DD plays with the girls most days (and the boy sometimes too) so it's only a matter of time before she gets told this too. So I feel like the best thing to do is preempt that by having a conversation with her about her about it, my rationale being that it's better for her to hear factual information from me than garbled half truths from other kids. On the other hand, I really don't want to go into much detail about porn and why people think that that's a fun thing to do to look at other people having sex.
I've always been totally factual and with her about the facts of life - she's known how babies are made since she was four. I've taught her about the reproductive system in the same way that I've taught her about the other body systems, and have no embarrassment about talking to her about this stuff. It's only in the last year or so that she's asked how the sperm gets from the penis to the fallopian tubes though,
and started to realise that sex is something that people do for reasons other than making babies. It just seems like a huge leap from that, to finding out that people like to watch other people having sex, and oral sex at that.
I guess it's a sign of the times though, isn't it, and not one I like.
I thought I'd explain that she's reached an age where it's totally natural to be curious about sex and to talk to friends abut it, but to be careful about what people tell you because often children get things a bit garbled and confused. That she can always ask me anything at all without feeling embarrassed and I'll answer her truthfully and factually, and that I'll never be cross or shocked about anything she asks me. I'm also going to talk to her about the importance of never accepting anyone telling you 'don't tell your mum' (which is what neighbour's DS told the girls, not for any sinister reason I don't think, just not to get into trouble) or that something must be kept a secret. I've told her this before but I think it needs re-emphasising in this context.
I'm going to talk to her about internet security and safety and that there's some really nasty stuff (and people) out there, and that porn often treats and portrays women in a very bad and demeaning way. I don't know how much detail to go into though.
Anyone with any experience of this?
I told the parents of the kids involved, btw.