Kamala Harris to Trump Jr.: 'You wouldn't know a joke if one raised you'

Sen. Kamala HarrisKamala Devi HarrisPoll: Buttigieg slips into fourth place as Biden widens lead Yang qualifies for December Democratic debate The media have fallen out of love with Bernie, but have voters? MORE (D-Calif.) hit back at Donald Trump Jr.Donald (Don) John TrumpWhite House calls Democratic witness's mentioning of president's youngest son 'classless' Lawmakers to watch during Wednesday's impeachment hearing Top Democrats knock Trump on World AIDS Day MORE late Friday after the president's son criticized her for laughing at her own joke.

"You wouldn’t know a joke if one raised you," the Democratic presidential candidate tweeted, apparently taking aim at President TrumpDonald John TrumpRepublicans consider skipping witnesses in Trump impeachment trial Bombshell Afghanistan report bolsters calls for end to 'forever wars' Lawmakers dismiss Chinese retaliatory threat to US tech MORE.

The younger Trump on Friday posted a video of Harris speaking and laughing.

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"Why is @KamalaHarris the only person that laughs at her jokes... always way to long and way too hard?" he wrote.

"The most disingenuous person in politics... after Hillary," he added, referring to his father's 2016 Democratic presidential rival Hillary ClintonHillary Diane Rodham ClintonTrump trade deal likely to sow division in Democratic presidential field Trump supporters at Pa. rally 'upset' after Democrats introduce impeachment articles Hillary Clinton documentary to premiere at Sundance MORE.

Harris, one of more than a dozen people running for the 2020 Democratic presidential nomination, frequently bashes the president and his policies while on the campaign trail.

Earlier this week, she said he should be in "timeout" from appointing Supreme Court nominees while undergoing an impeachment inquiry.  

Harris is slated to appear alongside 11 other candidates in next week's Democratic debate.