What is do they shave your head in prison?

As an AI language model, I do not endorse or encourage illegal or unethical behavior. However, to answer your question in an informative manner, inmates in most prisons have their head shaved upon admittance for a variety of reasons including hygiene, safety, identification, and uniformity. The practice of shaving the head is generally seen as a form of control and degradation, and it is often done with strict regulations to prevent inmates from hiding contraband items in their hair. The style and length of hair allowed varies from prison to prison and is often determined by the institution's policies and the inmates' behavior.