Knock-knock jokes, infamous for their repetitive and universally recognized format. They might be the corniest kids joke formats ever invented. And while the cheesy premises behind knock-knock jokes are known to bring kids joy, their corniness tends to bring adults…less joy. Because really, the main appeal of cheesy knock-knock jokes for kids is the annoying repetition.

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Sure, knock knock jokes are juvenile and corny. But when anybody says "knock knock" to you, it's almost physically impossible to not respond with "Who's there? It's an involuntary reflex. There's something hardwired into our brains that needs to complete the knock knock exchange. Maybe it's because even the worst knock knock joke is surprising.

A chance to land some clever word-play and nifty punchlines. From playground favourites to quick-fire gags from stand-ups, they remain a firm favourite with kids and adults alike. Even if they can be groan-inducing, as well as funny. Knock, knock.