Dave and Grandma

This is an anti-joke because it sets up the typical structure of a knock-knock joke, but instead of a funny punchline, it ends with a sad and poignant scenario where Dave's grandma doesn't remember him due to Alzheimer's.

• Knock
• Grandmother
• Sadness
• Anti-jokes
• Alzheimers
• Family

• Knock, knock. (Who’s there?) Roger. (Roger who?) Roger walks away, silently sobbing, having realized his mother’s Alzheimer’s is getting worse!
• "My grandmother used to tell us a joke. She’d say, "Knock knock." We’d say, "Who’s there?" Then she’d say, "I can’t remember"... and start to cry."
• Knock knock! Who’s there? Dad! Dad who? Silence.
• Knock knock. Who’s there? Mimi. Mimi who? Mimi’s got cancer.