We are confronted with the same kind of issue when it comes to defining the sex toys you might want to prohibit. Suppose you use a broad definition, like ‘any artifact or substance that you weren’t born with, but which you use to enhance sexual pleasure.’ This gets rid of the dildos and whips and chains, which was your admirable goal, but it also gets rid of perfume, oil, classy lingerie, and a romantic dinner for two at Angelo’s. But if you go narrow in your definition, then somebody is going to ask where you get off legislating with such specificity. Nobody should want the kind of Talmudic process that could conceivably result in banning pink vibrators but okaying all the others. Nobody should want a sexual magisterium. This laudable desire is what creates pressure for an express warrant approach.
Douglas Wilson