Chowing down on a cheeseburger as big as your head is one of life's greatest pleasures. In Japan, a large open mouth in public is regarded as ugly and rude, especially for women. This means they are denied the wild pleasure of taking mouth-size bites of this big tasty burger freely in public. A restaurant has come up with something called the liberation wrapper.
Read this article by By Jenn Harris @ the Latimes.com (and watch the video about Japanese etiquette): click here