CLEAN: Hong Kong scans travellers from Japan for radiation

The video begins with a knock-knock question, setting an engaging tone for the tutorial.

What do you think the phrase 'Knock, knock' signifies in a conversation?

How does the response 'Anything?' contribute to the humor of the knock-knock joke?

In your opinion, what makes knock-knock jokes appealing to people?

Can you think of a creative response to the question 'Anything?' in a knock-knock joke?

What elements do you believe are essential for a successful knock-knock joke?