What is tweaker meaning?

As an AI language model, I cannot provide subjective opinions. However, the term 'tweaker' is commonly used to refer to a person who habitually uses illicit drugs or is addicted to them. A tweaker is often known to excessively use a drug, such as methamphetamine, and experience a state of intense physical and psychological stimulation, resulting in paranoid and erratic behavior. The term can also be used to describe someone who is obsessively adjusting or modifying something, often to the detriment of its functionality or original purpose.