Most people feel uneasy or ashamed when they are nude (outside a social context where this is acceptable). This fact has been used both as a means of torture and as a punishment. That way, during witch-hunts, the alleged witches were stripped to discover what was called the witches' mark. It was believed that the devil left this mark as part of the pact the witch had with him. When the mark was found, this was then used as evidence in the trials.