National Knock-Knock Jokes Day

Celebrated on 10/31/2026

Quick Fact

National Knock-Knock Jokes Day, celebrated on October 31st, is the only holiday dedicated to the classic call-and-response joke format. The earliest known knock-knock joke dates back to 1929, though the format gained massive popularity in the 1930s through radio shows. It's estimated that over 90% of Americans have told or heard a knock-knock joke at least once.

Origins and Establishment of National Knock-Knock Jokes Day

National Knock-Knock Jokes Day was established in the early 2000s by humorists and comedy enthusiasts who wanted to celebrate the unique, interactive nature of knock-knock jokes. The exact founder is unknown, but the holiday quickly gained traction through online joke databases and social media. October 31st was chosen to coincide with Halloween, adding a playful, mischievous element to the day.

Evolution and Modern Commemoration

Originally a niche internet holiday, National Knock-Knock Jokes Day has grown into a widely recognized day of lighthearted fun. Schools often incorporate it into classroom activities, encouraging children to create and share their own jokes. Social media platforms see a surge in knock-knock joke posts, and some comedy clubs host themed open mic nights. The day is celebrated by people of all ages, from preschoolers learning their first jokes to adults sharing nostalgic humor.

Facts & General Observations

• The most famous knock-knock joke is "Knock knock. Who's there? Lettuce. Lettuce who? Lettuce in, it's cold out here!"
• Knock-knock jokes are considered a form of "call-and-response" humor, which is one of the earliest forms of joke-telling.
• A 2019 study found that knock-knock jokes are 70% more likely to be remembered than other one-liner jokes.

Explore more celebrations, trivia, and quests on National Day Quest.