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

President TrumpDonald John TrumpRussia's election interference is a problem for the GOP Pence to pitch trade deal during trip to Michigan: report Iran oil minister: US made 'bad mistake' in ending sanctions waivers MORE on Monday called Joe BidenJoseph (Joe) Robinette BidenAndrew Cuomo: Biden has best chance at 'main goal' of beating Trump Poll: Buttigieg tops Harris, O'Rourke as momentum builds Buttigieg responds to accusation of pushing a 'hate hoax' about Pence 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 WatersHarris says Congress should take steps toward impeaching Trump On The Money: Cain withdraws from Fed consideration | Says he didn't want 'pay cut' | Trump sues to block subpoena for financial records | Dems plot next move in Trump tax-return battle Dems seek to rein in calls for impeachment 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 SandersBernard (Bernie) SandersAndrew Cuomo: Biden has best chance at 'main goal' of beating Trump Poll: Buttigieg tops Harris, O'Rourke as momentum builds Buttigieg responds to accusation of pushing a 'hate hoax' about Pence 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'RourkeRobert (Beto) Francis O'RourkePoll: Buttigieg tops Harris, O'Rourke as momentum builds The Hill's 12:30 Report: Trump team fights back over Dem subpoena 2020 Dems back repeal of controversial New Hampshire voting law MORE, the former Texas congressman, entered the race last week, joining Sanders, Sens. Elizabeth WarrenElizabeth Ann WarrenJulián Castro: Trump should be impeached for trying to obstruct justice 'in very concrete ways' Poll: Biden tops Sanders nationally Pete Buttigieg: 'God doesn't have a political party' MORE (D-Mass.), Kamala HarrisKamala Devi HarrisJulián Castro: Trump should be impeached for trying to obstruct justice 'in very concrete ways' Poll: Buttigieg tops Harris, O'Rourke as momentum builds Trump Jr. slams 2020 Dems as 'more concerned' about rights of murderers than legal gun owners MORE (D-Calif.), Amy KlobucharAmy Jean KlobucharStudent slams Klobuchar for trying to classify pizza sauce as vegetable Pete Buttigieg: 'God doesn't have a political party' The Hill's Morning Report - Dem candidates sell policy as smart politics MORE (D-Minn.) and Cory BookerCory Anthony BookerHarris adds another to her list of endorsements in South Carolina The Hill's Morning Report - Dem candidates sell policy as smart politics 2020 Dems rebuke Trump on Iran, say they'd put US back in nuclear deal 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.