About once each week, while students are coming into class and talking to each other, I will suddenly hear the most authentic-sounding fake-orgasm noise. I'll quickly look up in shock. Invariably it is a girl making a noise of disappointment to her friend. They are discussing grades or homework or something. It is the noise Luke Skywalker would have made before saying, "I was going to Toshi Station to pick up some power converters!", had he, in fact, made a noise before saying that.
Here's the intriguing bit: nobody else in the room thinks this is a sexual noise. At least, no one even looks up. Which must mean one of two things: either my students are completely unaware of what an orgasm sounds like, or Asians sound different when they have sex.