No real reason for this post, except that I suddenly remembered I had purchased a year long access to JSTOR (very expensive, thank you donors here for funding it!) and could probably find a useful ethnographic paper on this topic. Which I am guessing will interest you all, because who doesn’t find incest interesting? Oh, and I also know there are all kinds of regional variations I am missing, I really hope you add on in the comments. This is more of a discussion post than a 101 post.