The phrase dikke banaan is everyday Dutch slang turned into a standalone joke, spread mainly through short soundboard clips and meme edits rather than a known film or show. Its humour comes from the language itself, with Dutch speakers recognising the blunt wording and non-Dutch viewers enjoying the heavy sound of the words. It circulates in gaming and chat communities as a quick reaction clip, similar in spirit to other short foreign phrase memes that get repeated until the phrase itself becomes the joke.