] It has happened to many of us: you take your seat in a ] public toilet and, just as nature is about to take its ] course, someone enters next door. ] ] Cue exaggerated coughing and throat clearing in an ] attempt to drown out the cacophony that sometimes ] accompanies one of nature's great levellers. Women in ] Japan, however, no longer have to suffer the indignity of ] having their movements echo through the ladies' room. ] ] With a flick of the hand, they can call on the Sound ] Princess. Guardian Unlimited | The Guardian | Royal flush covers loo blushes |