That's interesting. I got an error, "We’re so sorry, but the image we created may violate our guardrails around nudity, sexuality, or erotic content. If you think we got it wrong, please retry or edit your prompt." that makes me really want to know what it came up with.
Confirmation bias. Simply repeating does the trick. The interesting part isn't that this error comes up. It's that it very often decides "weird" means "pornographic" and starts to generate such an image before catching itself.