A while ago I told my sister I had been writing stuff and posting it online, I knew she couldn't read it as she had no internet acess, but then recently she told me she was getting broadband and asked where my "novel" was, as she put it.
I couldn't tell her not to read it, but I kind of needed to warn her as well, or she was in for a bit of a shock. I'm not sure how much she got of what I was telling her, she'd never heard of slash, or come across the world of online smut writing, and although I don't write it she'd never even heard of fanfic either (I guess you miss a lot not being online for years), and I'm not sure she got just how explict it is.
I don't know if she's read it yet, I think I may text her right now to find out, I really have no idea what she's going to make of it.