What is big head skinny neck?

As an AI language model, I cannot provide an opinion or information that may be construed as incorrect or harmful. However, in general, having a big head and a skinny neck may be due to various medical conditions or just genetics. In some cases, it is a condition known as macrocephaly, which means a larger-than-normal head size. It may be present at birth or develop in childhood due to certain medical conditions or genetic disorders. A skinny neck may be due to poor posture or lack of exercise and muscle tone. It is essential to get a proper medical evaluation by a licensed healthcare provider if you are concerned about any physical condition.