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

President TrumpDonald John TrumpTrump says his advice to impeachment defense team is 'just be honest' Trump expands tariffs on steel and aluminum imports CNN's Axelrod says impeachment didn't come up until 80 minutes into focus group MORE on Monday called Joe BidenJoe BidenSchiff closes Democrats' impeachment arguments with emotional appeal to remove Trump Conservative reporter on Sanders: He's not a 'yes man' Democrats feel political momentum swinging to them on impeachment 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 WatersGearing up for a chaotic year on K Street Maxine Waters: Republicans 'shielding' Trump 'going to be responsible for dragging us to war' Green says House shouldn't hold impeachment articles indefinitely 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 SandersSanders to Clinton: 'This is not the kind of rhetoric that we need' Conservative reporter on Sanders: He's not a 'yes man' Human Rights Campaign president rips Sanders's embrace of Rogan endorsement 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'RourkeVeronica Escobar to give Spanish-language response to Trump State of the Union address Biden calls for revoking key online legal protection Trump mocks Booker over suspended presidential campaign MORE, the former Texas congressman, entered the race last week, joining Sanders, Sens. Elizabeth WarrenElizabeth Ann WarrenKlobuchar plans campaign rallies across Iowa despite impeachment trial Hillicon Valley — Presented by Philip Morris International — Wyden asks NSA to investigate White House cybersecurity | Commerce withdraws Huawei rule after Pentagon objects | Warren calls on Brazil to drop Greenwald charges Warren pledges to release Trump records if elected MORE (D-Mass.), Kamala HarrisKamala Devi HarrisHarris on 2020 endorsement: 'I am not thinking about it right now' Panel: Is Kamala Harris a hypocrite for mulling a Joe Biden endorsement? The Hill's Morning Report — Dems detail case to remove Trump for abuse of power MORE (D-Calif.), Amy KlobucharAmy Jean KlobucharKlobuchar plans campaign rallies across Iowa despite impeachment trial Impeachment throws curveball in Iowa to sidelined senators Sanders says it's 'disappointing' he's not on campaign trail in Iowa MORE (D-Minn.) and Cory BookerCory Anthony BookerBlack caucus in Nevada: 'Notion that Biden has all of black vote is not true' The Hill's 12:30 Report: House managers to begin opening arguments on day two Patrick backs reparations in unveiling 'Equity Agenda for Black Americans' 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.