The wife speaks to her husband in a normal way, and the husband speaks to other people in a normal way. The couple live together in close quarters and in apparent peace and have had 3 children together. The 18-year-old son seeks help from a TV show that solves people's problems for them. Here's the video. The answer to the puzzle of the father's silence is revealed:
Via Metafilter, where the discussion is at odds with the spirit of the video. I don't recommend reading that, especially before watching the video.