Films packed full of swear words are not always entirely appropriate for a family-friendly TV channel, so the offending words have to be replaced with something rather, er ... less offensive. Think "muddy funster" instead of ... well, you get the idea. News Corp's FX had just such a problem when it screened the Samuel L Jackson movie Snakes On A Plane. But can you guess which words have been dubbed in? Clue: days of the week. You probably won't need it.