One week ago, a Twitter war erupted between Donald Trump and the hosts of Morning Joe, Joe Scarborough and Mika Brzezinski. Whereas the pair had been among the first in the media to take Trump’s chances seriously, in recent times they had become very critical of the Republican candidate.

On August 22nd, Trump tweeted that Mika was a “neurotic and not very bright mess!” He also threatened to some day tell the “real story” of Joe and Mika, whom he described as Scarborough’s “long-time girlfriend.” Scarborough responded with tweets telling Trump to “look in the mirror” if looking for someone who’s “neurotic and not very bright.” Scarborough added that the show was enjoying its best ratings ever “thanks to obsessed fans like you!”

The feud continued this morning. After an extended discussion of Trump’s mental health, with Scarborough suggesting that the Donald is a “sociopath” rather than the “psychopath” that former Obama adviser David Plouffe called him, Joe went on a riff, taunting Trump as “Amnesty Don” for his softening position on immigration. At one point, Scarborough deployed the “Amnesty Don” epithet no fewer than 18 times in 67 seconds.

JOE SCARBOROUGH: So think about this for 14 months, Amnesty Don. And a lot of people are calling him Amnesty Don.

JOHN HEILEMANN: People are saying it.

JOE: People are saying it. They’re calling him Amnesty Don. Amnesty Don, and that’s what people are calling him, I’m not calling him that. Amnesty Don, hashtag Amnesty Don

MIKA BRZEZINSKI: AmDon?

JOE: For 14 months Amnesty Don has been putting illegal immigration at the center of Amnesty Don‘s campaign. Right, John Heilemann?

HEILEMANN: Booyah.

JOE: And, yet, nobody in Amnesty Don‘s own campaign can tell you what Amnesty Don‘s position is after Amnesty Don won the primaries promising to deport 11 million, and telling Mika here, poor Mika, poor put-upon Mika. Telling poor put-upon Mika here that Amnesty Don was going to get a deportation force. But now Amnesty Don is softening.

MIKA: I thought he was kidding!

JOE: So now Amnesty Don this weekend, even Amnesty Don‘s own people–surrogates –don’t know what Amnesty Don‘s going to do on this.

HEILEMANN: What or when.

JOE: What or when. So, sort through Amnesty Don‘s statements on immigration and tell us what you think Amnesty Don‘s going to do.

HEILEMANN: I haven’t the faintest clue.