On social networking sites, make a negative comment about someone's photo.
On social networking sites, post a photo/video of a friend without asking their permission.
When you're invited to somebody's house for a meal, take a present.
When greeting people, use more formal language when speaking to an older person.
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When greeting people, kiss somebody on both cheeks when you meet them for the first time.
When you're invited to somebody's house for a meal, take your shoes off when you arrive.
When you're invited to somebody's house for a meal, insist on only paying for exactly what you ate for.
When you're having a meal with friends in a restaurant, complain that the food isn't very good.
When greeting people, use your partner's parents' first names.
When you're invited to somebody's house for a meal, critize the food.
When you're invited to somebody's house for a meal, send a message the next day to say thank you.