In Japan, order is the foundation of everyday life. Whether you're on the subway or in a line at a cafe, everyone patiently waits their turn. In Tokyo, pedestrians generally stand on the left side of the stairs.
Breaking the line, cutting in, or pushing forward in a crowd is considered 'meiwaku', which translates to disruptive behavior.
Passing Food with Chopsticks is Considered Unlucky
Japanese culture takes dining etiquette very seriously. In particular, two people passing food to each other with chopsticks is considered taboo, as it recalls a practice done at funeral ceremonies.
Instead, if you wish to share food, it's appropriate to pass the plate to the other person or serve it with the clean end of your chopsticks.