There is a huge controversy about the date on which Eliezer Yudkowsky will tweet the word "rationalussy". E.g.

/SG/will-eliezer-yudkowsky-write-a-twee

/JosephNoonan/will-eliezer-yudkowsky-tweet-the-wo

/LeonBohnmann/will-eliezer-yudkowsky-tweet-the-wo-58fbde5fbba4

This market will resolve YES if he writes a tweet containing the word "rationalussy" on the third to last day of 2023 (CT).

If "tweeting" is renamed to "xeeting" or similar, it still counts.