Possibly I am just uncharacteristically old-fashioned, but I don't understand why people suddenly think it's okay to talk about sex in this kind of detail to strangers and extremely casual acquaintances, just because someone wrote a book. I mean, in an appropriate setting I will talk in public, to anyone, about all kinds of sex in all kinds of detail. In a setting where that kind of thing is appropriate! But I wouldn't engage a random library worker or my coworker's daughter-in-law or some poor bookstore employee in discussion about fisting or genital torture or, you know, SEX, for heaven's sake.