I told my doctor I broke my arm in two places.

This classic one-liner gets its power from a clever bit of wordplay. The humor hinges on the double meaning of the phrase "in two places." In a medical context, it obviously refers to two separate fractures along a single bone. The joke works by having the doctor deliberately ignore the obvious meaning and instead interpret the phrase geographically, as if the patient has a habit of visiting specific locations that cause them to break their arm.

The setup feels like a straightforward, even serious, medical complaint, which makes the doctor's absurdly literal and unhelpful advice so funny. It plays on our expectation of doctors as serious, analytical problem-solvers. Instead of offering a cast or a sling, this doctor offers deadpan comedic logic. It’s a perfect example of a "groaner" that turns a formal doctor's office visit into the scene of a classic dad joke.