President Donald Trump, who has said other lawmakers have a low IQ, has insulted Joe Biden's intelligence in the past. | Alex Wong/Getty Images White House Trump calls Biden a 'low I.Q. individual'

President Donald Trump bashed Joe Biden on Monday after the former vice president let it slip this past weekend that he is running for 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," Trump tweeted. "Get used to it, another low I.Q. individual!"


Biden on Saturday accidentally said he was running for president, signaling the former vice president will likely announce his bid soon. He has been toying with a presidential run, and has been leading in a number of polls despite not officially announcing.

While giving a keynote at the First State Democratic Dinner in Dover, Delaware, Biden said he gets criticized, including by those on "the new left."

“I have the most progressive record of anybody running for the — anybody who would run," he said, which was overwhelmingly met with cheers.

“I didn’t mean,” the former vice president said while raising his hands to calm the attendees. Then he went on to chuckle, look down and make the sign of the cross on his chest.

“Of anybody who would run,” Biden said.

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! — Donald J. Trump (@realDonaldTrump) March 18, 2019

Trump, who has said other lawmakers have a low IQ, has insulted Biden's intelligence in the past.

The president last March tweeted that Biden was “weak, both mentally and physically,” after the former vice president claimed he would “beat the hell” out of Trump for disrespecting women.