where is it rude to show the teeth?

In some cultures, showing teeth can be considered rude or aggressive, particularly when it involves smiling or baring teeth in a confrontational manner. For example, in certain Indigenous cultures in the Pacific Islands, exposing teeth may be seen as a sign of aggression or disrespect. In contexts where a smile is not customary, such as formal or solemn occasions, showing teeth may also be viewed as inappropriate. Always consider the cultural context to avoid misunderstandings.