‘Bizarre’ joke about Dutch girl causes laughter with actors Zoë Kravitz and Austin Butler, but what is the clou?

A remarkable joke about a Dutch girl caused hilarity during a radio interview with Hollywood stars Zoë Kravitz and Austin Butler. The actors laughed at each other with ‘bad jokes’ and Kravitz no longer recovered after half of the joke. The big question with listeners: what was the clou?

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