I know it's fun to circle-jerk around these headlines, but it's a misdirection to give lay-people something titter about because it's too difficult to explain what's really happening. His behaviour actually is rational, he's just an idiot.
For Trump's entire life, the US stocks/bonds markets have mapped closely to market greed/fear respectively. When the market gets spooked, they turn to more conservative investments, and US bonds have historically been that. (Government bonds are typically seen as the least risky investment, because it's unlikely that a country falls apart and fails to pay its debts).
Fast forward to today, the US has a bunch of debt that needs refinancing this year, and lately, we haven't been getting good interest rates on our bond sales (which indicates people are seeing US bonds as more risky than usual). So Trump said, "no problem, we just need to instill a bit of fear in the market to drive investors to bonds, which will cause the interest rate to drop, so we can refinance our debt at a better rate." So he announces a bunch of nonsensical tariffs, which tanks the stock market, and just like he expected the bond market saw a dip in interest rates......for about a day, followed by a sharp increase! That sharp increase is why Trump agreed to pause the tariffs. Not only did it not work how he thought, it would seem he exposed a pronounced decline in trust for the US' ability to pay its debts. Instead of running to US bonds, investors ran everywhere else (gold, the Swiss Franc, the Euro, etc.)
I don't know what his next move is, but I have to think he's feeling a bit desperate. He's going to probably try to up his "blame the Democrats for their spending" game, of course without acknowledging that he has also only increased spending (even with all of DOGE's hard fought, and definitely not half-baked, budget cuts).
But all his strategies seem to be overt market manipulation, and nothing else. I feel like it really highlights the difference between someone who can create actual value using intelligent planning and innovation, and someone who is a capitalist leech who has fooled themselves into thinking that buying low and selling high does something useful for someone.