I told my doctor I keep seeing spots.

This little gem is a classic bit of wordplay, relying on the two different meanings of the word "seen." The doctor, of course, uses the word in its common sense of "have you consulted with or visited" a specialist. The patient, however, pivots to the purely literal, visual definition of the word. The humor comes from the patient's deadpan response, completely misunderstanding the question and derailing a serious medical inquiry with an absurdly simple answer.

What makes the joke work so well is that it's set in a very relatable context. "Seeing spots" is a genuine medical symptom, often related to eye floaters or more serious conditions, and a general practitioner's first step would absolutely be to ask if you've seen an eye doctor. The setup is perfectly logical. The punchline's sudden turn into literal-minded silliness completely upends our expectations of how a normal doctor's visit should go, painting a picture of a patient who is perhaps a little too simple for their own good.