Well not everyone is raised in the same culture. So if you see people from a differenent culture that you were raised in. If they are acting differently it is not because they are weird, it is simply because they have not adapted to your culture or a customed to it. It is like if you went to a different culture people would see you as being weird because you dont do or maybe believe the same things that they do. sometime us as people are judmental of other people frome different cultures so we need to be culturaly tolerant of other people.