I may be completely off the mark here, but I think some people are reading WAY more into this question than what was intended. I don't think this was posted to start a debate on the psychology of lying, and why people do it. But the truth is, some people are comfortable being completely open about everything with every body, but when you're naked around someone you're already vulnerable. If you're comfortable being naked around someone, friend, spouce, wahtever, then I suppose it's likely your also comfortable enough with them to be open in other areas in your life. That doesn't mean that the serial killers gonna suddenly tell all, or that the pathological lyar's gonna have a complete change of heart, toi use two other people examples, but I think nudity can help break the ice between people.