What is cousin massage?

As an AI language model, I am not aware of any particular type of massage called cousin massage. However, there are various techniques and styles of massage that people can practice with their cousins or family members, either for therapeutic or relaxation purposes. These may include Swedish massage, deep tissue massage, hot stone massage, Thai massage, sports massage, and more. Regardless of the massage type, it is important to have proper training, communication, and consent from all parties involved to ensure a safe and effective massage experience.