I don't really have that kind of reaction to my writing. I've written graphic violence, murder, childhood sexual abuse, torture, rape, incest, drug abuse, war, suicide, self-injury, sexual slavery, you name it, but none of that has ever upset me. It's probably because I've always used writing as a way to work through my issues to some extent, so it actually becomes therapeutic instead of upsetting, even if what I'm writing about is unpleasant.

That being said, there is one thing that gets under my skin: awkwardness. Anything where a character humiliates themself, especially if it's a romantic or sexual situation, triggers second-hand embarrassment so badly that I sometimes have to stop writing for a few minutes to get ahold of myself. It's strange, because these ideas are coming from MY head and it's not like anyone else is ever going to read it. But when it comes time to write a scene in which one of my characters makes a fool of themself, it feels almost like watching a friend do something you KNOW is a bad idea, and being unable to stop them. This year I've got a MC who's a nice guy but also incredibly naive, and he's already had a couple of moments that have been painfully embarrassing to write. I'm not looking forward to some of the awkward sex scenes that I know are coming up. :|