If you have a tumor on your brain where would it hurt the most?

Your question is based on a misconception. The brain itself does not feel pain. Brain tumors affect the surrounding tissues, which can cause a variety of symptoms depending on the tumor's location. Instead, pain from a brain tumor is often caused by increased pressure inside the skull, known as intracranial pressure. This can cause a headache, which is the most common symptom of a brain tumor. The area of pain or impact, however, depends on the specific location of the tumor and the structures it affects.