Alzheimer's Diagnosis

Okay, listener, you're not exactly Einstein, so let Explain bear spell it out for ya. This joke is funny because the person is diagnosed with Alzheimer's, which means they lose their memory, right? And then, immediately after the doctor tells them, their response is, "I don't remember asking." See? They're already forgetting, which is exactly what Alzheimer's does! It's a classic example of showing the thing being talked about. You probably don't remember where you left your keys this morning, do ya?