Koreans generally do not form lines. Be aggressive in a line or you will never get anywhere. Friends may stand or walk very close to each other. When Koreans are embarrassed or ashamed, they generally laugh. Laughter or smiling can also mean fear, anger or surprise.
Some Korean women cover their mouths when they smile or laugh.
Men do not cover their mouths. Be Aware Koreans place great value on non-verbal communication and consider a person's inability to interpret feelings as a lack of sensitivity. Silence is a natural and expected form of non-verbal communication. Do not feel a need to chatter-quiet, dignified and modest behavior is important to Koreans. Sit or stand up straight.