President Donald Trump mocked Joe Biden on Monday morning for a verbal flub over the weekend that had him quieting a crowd after he accidentally announced that he's seeking the presidency.

Biden said Saturday that he has the 'most progressive record of anyone running' eliciting cheers from a home state audience. He immediately corrected himself, making clear that he meant to say 'anybody who would run' for the Democratic nomination.

Trump used the gaffe as a cudgel against the former vice president.

'Joe Biden got tongue tied over the weekend when he was unable to properly deliver a very simple line about his decision to run for President. Get used to it, another low I.Q. individual!' he said.

President Donald Trump mocked Joe Biden on Monday morning for a verbal flub over the weekend that had him quieting a crowd after he accidentally announced that he's seeking the presidency

Biden said he has the best record 'of anyone running' eliciting cheers from a home state audience on Saturday. He immediately corrected himself

HE'S RUNNING? Biden said Saturday that he has the 'most progressive record of anyone running' eliciting cheers from a home state audience

Biden is actively considering a presidential run and remains a front-runner in the 2020 field, despite his hemming and hawing over whether to formally enter the field.

He told firefighters chanting 'Run Joe Run' at a Washington, D.C. conference last week that they should save their enthusiasm — it might come in handy soon.

'I appreciate the energy you showed when I got up here,' he told the fans. 'Save it a little longer. I may need it in a few weeks.'

At a Delaware Democratic Party dinner he was headlining over the weekend, the former vice president appeared to make a Freudian slip or a gaffe as he talked about himself as a current candidate.

He quickly added, 'I didn't mean it.'

President Trump attends church with first lady Melania Trump in Washington, D.C. on Monday

Biden declined to run in 2016 after a sudden, family tragedy. He has hinted repeatedly over the last several weeks that he doesn't intend to take a pass on the presidency again.

The ex-Delaware senator is 76 now and would be 78 once he takes office.

'I'm more optimistic about our nation's future than I was when I was that 29-year-old kid,' he said in one speech last week, subtly addressing concerns about his age.

He's run for and failed to win the Democratic Party nomination twice already. Still, he is considering whether to make another go of it in the current political environment.

He says that 'extremism' and 'mean pettiness' are overtaking the country under the 'current president' of the United States.

Biden said that last week, in his speech to firefighters, that America has a 'history of emerging' from dark times and it appears to be 'waking up to the reality that this is not who we are' once again.

He called on Americans to 'remember who the hell we are' in the speech about the 'moral fabric' that makes up the nation.

'That's what the next President of the United States needs to understand, and that's what I don't think this current president understands at all,' he announced.

Trump did not immediately return fire on Biden, who he'd made the subject of past insults. It wasn't until Monday that he grouped him with other 'low I.Q.' individuals within the Democratic Party that he's previously harangued, like California Rep. Maxine Waters.

Biden and Trump have a history. They sparred in 2016 as the Republican vied for the Oval Office, with Biden saying days before the election, after Trump's hot mic comments on women were revealed, that he'd like to take him 'behind the gym' and teach him a thing or two about respect for women.

'I mean, all kidding aside, wouldn't you?' he said as he revisited the topic. 'I mean, for real. Can you imagine a guy in the locker room talking that way? And your sister's out there watching the game. Not a joke.'

In explaining his lewd remarks on the Access Hollywood audio, the Trump campaign had brushed it off as typical locker room talk.

Biden said they were 'the textbook definition of sexual assault' at a campaign rally for Trump's opponent.

He threatened direct violence against Trump last March at an sexual assault prevention conference, saying, 'They asked me if I’d like to debate this gentleman, and I said no. I said, "If we were in high school, I’d take him behind the gym and beat the hell out of him."

'I’ve been in a lot of locker rooms my whole life,' he said. 'I’m a pretty damn good athlete.'

Taking a jab at Trump, he added, 'Any guy that talked that way was usually the fattest, ugliest SOB in the room.'

Trump has mostly shrugged off Biden's potential candidacy, in public, although h is rumored to be one of the candidates that Trump fears the most.

'I dream about Biden. That’s a dream,' he told CBS in a July 2018 interview. 'I’d love to have it be Biden.'

He claimed, 'President Obama took him out of the garbage heap, and everyone was surprised he did.'

He said in January that Biden is 'weak' and he's not especially concerned about him.

Biden pledged to make a decision by January about his political plans. He has yet to say whether he'll challenge Trump in 2020 or not, although he is believed to be planning an announcement.

As the semi-retired politician considered his options, two additional Democrats entered the race: former Texas Rep. Beto O'Rourke and New York's junior Sen. Kirsten Gillibrand.

The field is flush with candidates already, and Kellyanne Conway, a senior adviser to Trump, mocked it as a 'baker's dozen' in a Monday morning television appearance.

She said the other party still has 'no strategy' to defeat Trump, as evidenced by male candidates' early promises to add women to the ticket, if they win the nomination.

'There's a whole hot mess in the Democratic Party,' she said from the White House lawn during an interview on Fox News.