In the livestream demo they did something similar but with a DALLE-generated image of a squirrel holding a camera and it still was able to explain why it was funny. As the image was generated by DALLE, it clearly doesn't appear anywhere on the internet with text explaining why its funny. So I think this is perhaps not the only possible explanation.
It didn't correctly explain why it was funny though: which is that it's a squirrel "taking a picture of his nuts", nuts here being literal nuts and not the nuts we expect with phrasing like that.
What is funny is neither GPT-4 nor the host noticed that (or maybe the host noticed it but didn't want to bring it up due to it being "inappropriate" humor).
That interpretation never occurred to me either, actually. I suppose that makes more sense. But since it did not occur to me, I can give GPT4 some slack. It came up at the same explanation I would have.
