i watch this movie and i get ta tell you . it be not that disturb when you finally realize that thing can get good even for a mess up family like the one in this movie . what do you think about this mysterious visitor . he hit the father with a rock and go home with him and eats dinner with him and his family and stay at his place . what be go on here . my point of view be represent i think this mysterious visitor be like a guardian angel and be the reason for this bizarre emotional stimulation for the whole family . father represent care more about his son and want to do something good for the youth by make a documentary film about sex and violence amongst the youth . mother represent realizes that she be just a woman and start get in touch with her inner self by discover that she can milk herself . ( weird but original ) . son represent realize that he have to study hard to pass some important exam ( after his folk stand up for him and kill those bully who have be abuse him all the time ) . daughter represent after be hit on the head by a rock she get back to her parent house to find her parent really closer to each other emotionally and physically ( breast suck scene ) . bottom line be this mysterious visitor have influence each member of the family to do something good for him or herself or for each other . first he hit the father with a rock twice which make him the father think about how unsafe and brutal his society have become and decide to make a documentary about violence and sex abuse among the youth ( the night he be hit on the head he couldn not get much sleep and grab his camcorder and go out to his car to watch a film feature him be sexually abuse by a couple of bully ) which later on make him stand up for his son with the help of his wife by kill those bully which lead to him find his long time bury feeling for his wife . the son want to be a good person and the daughter come back home to her parent to re unite with her family again . this could be the perfect end for this movie except that they have become murderer and will be catch eventually but they do not seem to care about it in the last scene prove that love be all you need in this world .