ChatGPT v5.0 spiraling on the existence of the seahorse emoji was glorious to behold. Other LLMs were a little better at sorting things out but often expressed a little bit of confusion.
At least to a level that gets you way past HTTP Bearer Token Authentication where the humans are upvoting and shilling crypto with no AI in sight (like on Moltbook at the moment).
More realistically I think you'd need something like "Now write your post in the style of a space pirate" with a 10 second deadline, and then have another LLM checking if the two posts cover the same topic/subject but are stylistically appropriate.