Washington (CNN) On Sunday, President Donald Trump sent out 29(!) tweets and retweets. Which, in and of itself, is a remarkable thing to say about the chief executive of the United States. (A prolific tweeter and retweeter myself, I sent out 15 tweets on Sunday. And, relatedly, I am not the president of the United States.)

But, it's not just the sheer quantity of Trump tweets and retweets that are so mind-boggling. It's what he said in them. Here's a brief summary:

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All of this -- and lots, lots more -- in the space of a single day.

Now. Trump has had lots of oh-my-God-did-you-see-what-he-just-tweeted days. I still remember when he took to Twitter, with no proof, that President Barack Obama had ordered Trump Tower wiretapped during the 2016 election. Or when Trump said that MSNBC host Mika Brzezinski was bleeding badly after a face lift

But, for the most part, these were one-offs -- a single nutty tweet amid Trump's usual daily mix of propaganda and mistruth. Never before -- or at least not as far back as I can remember -- have we seen such a sustained day of wildness and wackiness from Trump.

Which is saying something. Because Trump has long turned to Twitter as his preferred method of communicating -- with his supporters, with the media and with the country. And Twitter -- I've long argued -- is where the truest form of Trump comes out. It's his Twitter feed -- not official White House statements or signing ceremonies -- where we find out what is on Trump's mind and what he really thinks about his presidency and the world.

When you think of it that way, what we witnessed on Sunday is somewhere between concerning and absolutely terrifying. The most powerful man in the country -- and maybe the world -- spent his day touting unproven conspiracy theories about stolen elections, suggesting collusion between Democrats and comedians, attacking a military hero and Republican senator, and trying to program his favorite cable network's broadcasts. And he did all of this while failing to send even a single tweet about the tragic mass shooting in New Zealand.

Trump's critics questioning his decision-making -- or mental heath -- isn't all that new. What was new, however, was that the White House felt the need to mobilize some of its most senior officials to push back on the idea that Trump was slipping mentally.

"No, I don't share those concerns," Kellyanne Conway told reporters Monday of her husband's worries about Trump's mental health. Conway's assertion came less than 24 hours after acting White House chief of staff Mick Mulvaney was forced to insist that "the President is not a white supremacist." Mulvaney also said, "I don't think anybody can say the President is anti-Muslim."

When, in the space of 24 hours, two of the top officials in the White House are going public to claim that the President isn't a) crazy b) a white supremacist or c) anti-Muslim, you know Trump is going through a very rough patch.

And, as with many of Trump's problems, this latest series is self-created. His willingness to take to Twitter to air grievances, promote conspiracy theories and, well, just riff rightly raises questions in the mind of any thinking person about how he thinks, what he cares about and how all of that impacts his leadership of the country.

If Trump's Sunday on Twitter doesn't raise some concerns for you, you aren't paying close enough attention.