An adult who enters into a contract with a minor generally cannot avoid the contract. When a minor disaffirms a contract, whatever the minor transferred as consideration (or its value) normally must be returned. A person who is so intoxicated as to lack mental capacity when he or she enters into a contract must perform the contract. Emancipation has no effect on a minor's contractual capacity. If an individual who has not been judged mentally incompetent understands the nature and effect of entering into a certain contract, the contract is normally valid. The age of majority for contractual purposes is twenty-one years for males and eighteen years for females. Some states' statutes restrict minors from avoiding certain contracts, including for necessaries. Generally, parents are liable for contracts made by their minor children. In most cases, a person, to disaffirm a contract entered into when he or she was intoxicated, must return any consideration received. A minor may disaffirm a contract entered into with an adult