Fox News host Tucker Carlson responded in real time to Rep. Maxine Waters (D-Calif.) on his show Friday night to comments the liberal Democrat had made about him on MSNBC just minutes prior.

Waters, speaking to MSNBC host Joy Reid, was responding to a recent discussion Carlson had on his show when he discussed with Larry Elder a report that said Waters was considering running for the White House in 2020.

Ahead of a speech in New Hampshire this weekend — ironically, also the state with the first presidential primary — Waters told the Daily Caller that she would run for the White House if millennials “want” her to.

“I’m just going up to do a county Democratic thing. That’s all,” Waters told the Daily Caller. “I’m not running for anything but my own seat. I don’t have any presidential aspirations. If the millennials want me to do it, I’d do it, though.”

Given Water’s crusade against President Donald Trump and her continuous threats to try and impeach the president, Carlson and Elder both laughed off the idea that Waters could be a serious contender for the White House in the next presidential election.

That is something Waters took offense with. But in her interview with Reid, she denied ever saying she would run for president and called Carlson a liar.

“They made up this story,” Waters said. “They are trying every way they can to discredit me, to make people uncomfortable with me…so you’re gonna be hearing a lot more from these people, who are all, you know, aligned with trying to discredit Maxine Waters.”

“Don’t believe anything they’re saying,” Waters emphasized.

When Waters made those comments, there’s no way she thought she would get a near-instant response from Carlson. But just four minutes after Waters lashed out at Carlson, the Fox host interrupted a segment on his show to laugh at Waters and give a response live on air.

After playing her comments, Carlson busted out laughing.

“I just, I just had to play it, I couldn’t help myself,” Carlson said laughing hysterically, “because of course, Maxine Waters is self-discrediting.”

The Fox host went on to rip into Waters.

“Why does Maxine Waters get to go on cable channels and no one ever mentions her ethical problems, the fact that she lives in a $4.5 million house after working for the government for 40 years, et cetera,” Carlson said.

“They’re super-hyper skeptical of everything Trump says and then they’re not skeptical at all of anything that Maxine Waters says,” he explained.