Trump calls Biden 'low I.Q. individual' after verbal slip

President TrumpDonald John TrumpLawmakers prep ahead of impeachment hearing Democrats gear up for high-stakes Judiciary hearing Warren says she made almost M from legal work over past three decades MORE on Monday called Joe BidenJoe BidenBiden: Buttigieg 'doesn't have significant black support even in his own city' Biden: 'I'd add' Warren to my list of potential VP picks How can top Democrats run the economy with no business skill? MORE a "low I.Q. individual" after the former vice president had a slip of the tongue and nearly announced he was running for president in 2020.

"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!"

Trump has previously deployed the "low I.Q." line of attack against a number of critics, including MSNBC host Mika Brzezinski, Rep. Maxine WatersMaxine Moore WatersDemocrats could introduce articles of impeachment next week What are not criteria for impeachment? Fed's top regulator takes heat from both parties MORE (D-Calif.) and actor Robert De Niro.

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The president was seizing on a mishap from Biden over the weekend where he told a gathering of Delaware Democrats that he has "the most progressive record of anybody running for the ... anybody who would run" for the 2020 nomination.

Attendees began applauding as Biden repeated the phrase, "Of anybody who would run."

Biden has long been mulling a presidential campaign for 2020 and is considered a near certainty to jump in the race.

The former vice president has been an ardent critic of the president, and caused a stir last year when he said he would have "beat the hell out of" Trump in high school over his degrading comments about women.

Biden has typically hovered at or near the top of polling among Democrats on their preferred 2020 candidate. 

A poll released earlier this month showed Biden was the top choice among likely Iowa Democratic caucus participants, garnering 27 percent of the vote. Sen. Bernie SandersBernie SandersHow can top Democrats run the economy with no business skill? Biden rallies with John Kerry in early primary states Buttigieg campaign says 2000 people attended Iowa rally MORE (I-Vt.) was the first choice of 25 percent of those surveyed.

Should Biden officially announce his candidacy, he would join an increasingly crowded field of presidential hopefuls.

Beto O'RourkeBeto O'RourkeButtigieg picks up third congressional endorsement from New York lawmaker Klobuchar hires staff in Nevada Deval Patrick enters 2020 race MORE, the former Texas congressman, entered the race last week, joining Sanders, Sens. Elizabeth WarrenElizabeth Ann WarrenBiden: 'I'd add' Warren to my list of potential VP picks Warren says she made almost M from legal work over past three decades How can top Democrats run the economy with no business skill? MORE (D-Mass.), Kamala HarrisKamala Devi HarrisSunday shows — Nadler: A jury would convict Trump in 'three minutes flat' Booker on Harris dropping out: 'Iowa voters should have the right to choose' Booker campaign rakes in million after Harris exits 2020 race MORE (D-Calif.), Amy KlobucharAmy Jean KlobucharBiden: All-white debate not representative of party, but 'you can't dictate' nominee Delaney to DNC: Open second debate stage for candidates who qualified for past events There's a lot to like about the Senate privacy bill, if it's not watered down MORE (D-Minn.) and Cory BookerCory Anthony BookerSunday shows — Nadler: A jury would convict Trump in 'three minutes flat' Booker on Harris dropping out: 'Iowa voters should have the right to choose' Booker campaign rakes in million after Harris exits 2020 race MORE, among others.

Trump has previously welcomed the idea of facing off against the former vice president, calling him a "dream opponent." 

Last week, he declined to say whether he viewed Biden or O'Rourke as a stronger challenger, telling reporters "Whoever it is, I'll take him or her on."

Updated at 9:46 a.m.