California Exotic Novelties has unveiled what must be the world’s most discrete vibrator, the Plume Vibrating Faux Pen. The sleek black Plume is five inches long and is powered by a single AA battery. Pressing its top gets the action started and it even has a clip so it can be carried in a shirt or jacket pocket without arousing suspicion. The waterproof Plume is sold complete with a premium pen-like gift box.