I teach gender and sexuality studies for a living, and that means I talk about sex all the time. Well, sort of. Like the rest of culture, I talk about it, but I also don't talk about it. Sex is everywhere, in all the pop songs and movies, at the end of every prom (or so I hear—I never went to prom), in every confessional and every storytelling. As my students and I discussed last week, we are all supposed to have some breathless tale of the first time we had sex, but not, like, the first time we had Brussels sprouts. Sex is at the core of our sense of self, even when it's not; in that case, it takes some explaining to do.