As you may have heard, former New York City mayor Mike Bloomberg recently got into the Democratic primary with one goal: to troll the shit out of Donald Trump. Oh sure, he’d like to be the nominee, but more than that, Bloomberg has been spending hundreds of millions of his own money to drive the president insane. And thus far, it appears to be working! Last month, the New York Times reported that despite Bloomberg’s relatively low polling, he’s managed to get under Trump’s skin much more than, say, Elizabeth Warren or Bernie Sanders, and Trump is apparently “pricked” by Bloomberg’s massive ad buys and anti-DJT messaging, including spots targeting his treatment of military leaders. And if the events of the last 24 hours are any indication, it’s been $200 million (and counting!) well spent.

Fueled by an alleged, though totally believable, anger over Bloomberg ads targeting his “girth,” Trump spent Sunday attacking “Mini Mike” on Twitter, declaring the three-time mayor “fake news,” a loser, out to get Sanders, and, most damningly, short:

He also felt the need to let it be known that he engaged in physical activity over the weekend:

Not content to let the president spin his wheels, Bloomberg’s campaign shot back via his national press secretary, Julie Wood, who said in a statement: “The president is lying. He is a pathological liar who lies about everything: his fake hair, his obesity, and his spray-on tan.” Later that day, Bloomberg himself responded: “I will stand on my accomplishments of what I’ve done to bring this country together and get things done. I’ve been doing it for a long time. I stand twice as tall as he does on the stage, on the stage that matters.”

And somehow, that was only round one! Later, longtime Trump administration mouthpiece Kellyanne Conway told Axios, of Bloomberg: “His outsized wealth and outsized ego are matched by his overwrought jealousy and spitefulness towards the president. Jealousy is a dangerous motivator for people, leading them to confuse with a sugar high that money can buy with substance that voters demand to hear.” To which Bloomberg adviser Howard Wolfson shot back: “History will call to account every single person within this administration who has enabled and abetted this lawless and dangerous president.” To which Conway responded: “Howard and I have already made history together. His work for Hillary [Clinton] and my work against Hillary helped keep her out of the White House.” To which Wolfson—yes, this continued!—responded: “And in less than a year we will make history again when Kellyanne and Mr. Trump will have to stand and watch Mike take the oath of office.”