Consent is only available in relation to certain offences such as assault and battery. However, according to the case of Brown, once an offence goes beyond battery, a victim cannot consent to it unless it falls within one of the special exceptions to this rule for public policy reasons. It is in the public interest to protect society from a cult of violence and prevent corruption of young people. These exceptions include sporting activities, horseplay and medical treatment. If the offence goes beyond battery and doesn't fit into one of the exceptions then the defence will fail.