DrHGuy first heard this while in medical school. It is also the only joke DrHGuy recalls from medical school that doesn’t feature a cadaver.
The Medical Specialties
Internist: A doctor who knows everything but does nothing.
Surgeon: A doctor who knows nothing but does everything.
Psychiatrist: A doctor who knows nothing and does nothing.
Pathologist: A doctor who knows everything and does everything — but too late.