You may think that the language you use in your home will have no impact on your case. With the proliferation of mannerlessness and vulgarity these days, people tend to take how they say things for granted, and ignore the impact of what they say. The judge won't. If you regularly curse, yell at your kids, make inappropriate remarks of a sexual nature, or speak disparagingly of your spouse, you can expect it to be revealed in court. It is one among many factors that are considered in awarding custody, but in a close decision, may just be the reason that sways the court against you. If this sounds like you and you want custody of your kids, tone it down.