A person, sometimes unfortunately either a narcissist or someone who really needs to see a doctor themselves but lacks the executive functioning to work out that they have a problem which is not in the best interests of their patient.

In all cases, if you are going to approach a doctor or any professional with Internet or external information, you had better be sure it's worthy or entertainable

They are typically human in design, about 1.60- 2m in height, usually with 2 legs and the ability to raise or lower your blood pressure through their sheer confidence and aura of rationality.

In a percentages of cases, a doctor is a person who uses their brain and their amazing knowledge banks to treat a person successfully without trying to keep them hanging on like a gravy train drip. These people will try and study your history instead of turning their virtual roulette wheel loaded with 36 drugs.

These people should have the title Dr. DemiGod + <earth name>

Someone who puts up with an ever more impatient public demanding quick fixes for innocuous conditions while facing scrutiny from those who judge service, cost-accountability, and adherence to legal definitions of medicine.

A Doctor is someone who goes to school for up to 16 years after they graduate high school, only to lose their job and liscense on their first day because some family filed a malpractice lawsuit because he couldn't save their doomed-in-the-first-place family member.

Doctor Who?

An alien with two hearts, resembling a human, who travels through time and space with various gorgeous companions that can't resist him because he's just so awesome. Battles evil aliens all over the universe and saves countless lives, civilizations, and planets.

Someone who has spent 11-16 years of training after high school and over hundreds of thousands of dollars to become certified as a doctor.

The man who will save the Earth.

A med school graduate

Somehow commands a level of prestige in society beyond his means.