He told me to put on my schoolgirl skirt, a white shirt, thigh highs, heels, sit in the chair at the end of the bed, and wait. So I did. When he returned, in brown slacks, a tweed coat, cup of coffee in hand, he was carrying a folder. He told me he was very disappointed in my last exam scores, and that since I was such a promising student, he was willing to tutor me personally. Apparently, I had failed a test for a course entitled “History of Eroticism: A Focus on BDSM and Anal Punishment,” in which I was supposed to have learned about Raphanus (a genus of…