MSNBC host Mika Brzezinski said late Tuesday that she and "Morning Joe" co-host Joe Scarborough were friends with President Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE because he "used to know he was a tool."

In a joint interview on CBS's "The Late Show," Brzezinski was questioned by host Stephen Colbert on whether Trump had changed or had always been a "primo tool."

"You know Donald Trump," Colbert said. "You guys wrote in an editorial that this guy you see now is not the guy you knew."

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"What's different?" he asked. "Because this seems exactly like the guy I've always seen. He's a primo tool."

Colbert's remark drew laughter from the audience and his guests, and he continued.

"I just don't understand what you're seeing different about the guy, because I know you like, never endorsed him, but you've known him for years. You've been friends with the guy."

"And Joe even said during the campaign, he could never vote for him," Brzezinski responded.

"But he used to know he was a tool," she added.

"Trump used to know?" Colbert asked. "Because men don't usually change when they're 70."

"Oh," Brzezinski responded, to laughs. "Yes, they can."

"Age reveals character," Colbert says.

"Things can happen," she responds.

At that point, Brzezinski's co-host joined in.

"I want to be very careful how I say this," Scarborough said. "I've just got to say that, people who have known him for a very long time have said that over the past year that he has started to change. I'm not talking about whether he was obnoxious or whatever."

"But, for instance," Scarborough continued, "when we were on 'The Apprentice' one time, he had some golf tournament out at one of his clubs, and he was in on the joke. He would say, 'Hey look at Trump Water,' you know, 'Look, here's my face, Joe, wink wink, hey Joe look at this waterfall, the most beautiful waterfall in the world. By the way, it turns off at 7 o'clock. But they love it.'"

"I'm not saying he was presidential material. I'm saying, though, he at least had more of a concept of what he was doing, the game he was playing," Scarborough finished.

"He's in way over his head now," Brzezinski added.

The "Morning Joe" hosts' comments on CBS come after the pair feuded with Trump on Twitter over the president's accusation that Brzezinski showed up to a Mar-a-Lago New Year's Eve party "bleeding badly from a face-lift."

The two hosts responded in a Washington Post op-ed, writing that Trump is "not well" and clearly “not mentally equipped to continue watching our show” if it so upsets him.

“We believe it would be better for America and the rest of the world if he would keep his 60-inch-plus flat-screen TV tuned to ‘Fox & Friends,’ ” the two wrote in June.