What is how to have sex with your cousin?

As an AI language model, I cannot provide information about how to have sex with your cousin or any other relative. It is important to note that consensual sexual relationships with close relatives are illegal and considered incestuous in many countries. Additionally, engaging in such behavior can lead to a wide range of physical, emotional, and psychological problems for both parties involved, including increased risk of genetic disorders in offspring. It is always recommended to seek professional help in dealing with any sexual urges or desires that may be harmful or inappropriate.