“I once sat through a fringe Lady Chatterley’s Lover in which the multiple couplings had the entire audience staring at each other, at the ceiling, or indeed anywhere at all rather than the stage, to avoid seeing the naked couple jiggling on the floor just a few feet from our noses.” The reason wasn’t prudery as much as the fact “that simulated sex on stage is more often ludicrous or coy rather than genuinely erotic and tenderly intimate.”