Comedian Jon Lovitz says he is amazed that Donald TrumpDonald John TrumpJulián Castro: It's time for House Democrats to 'do something' about Trump Warren: Congress is 'complicit' with Trump 'by failing to act' Sanders to join teachers, auto workers striking in Midwest MORE used one of his “Saturday Night Live” characters to mock Hillary ClintonHillary Diane Rodham ClintonMissing piece to the Ukraine puzzle: State Department's overture to Rudy Giuliani On The Money: Trump downplays urgency of China trade talks | Chinese negotiators cut US trip short in new setback | Trump sanctions Iran's national bank | Survey finds Pennsylvania, Wisconsin lost the most factory jobs in past year Meghan McCain, Ana Navarro get heated over whistleblower debate MORE’s presidential campaign.

Lovitz’s tweet includes a video of the comic chuckling as Trump, the GOP's presidential nominee, impersonates him during a press conference Wednesday morning.

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Trump made fun of Robby Mook, Clinton’s campaign manager, for sounding like Tommy Flanagan, a pathological liar Lovitz played in the late 1980s.

“And then [Mook] said, ‘Uh, could be Trump,’ ” Trump said during a press conference in Doral, Fla. "'Yeah, yeah, Trump, Trump, oh, yeah, Trump.’

“He reminded me of Jon Lovitz in ‘Saturday Night Live’ in ‘The Liar,’ ” Trump added of Mook.

“Where he’d go, ‘Yeah, yeah, I went to Harvard, Harvard. Yeah, yeah. This is the guy, could be Trump. Yeah, it could be Trump. Yeah, yeah.' It is so far-fetched and ridiculous.”

Mook on Sunday questioned whether Russian hackers had breached the Democratic National Committee (DNC) and stolen emails to help Trump.

“What’s disturbing about this entire situation is that experts are telling us that Russian state actors broke into the DNC, took all those emails and are now leaking them through these websites,” Mook said on ABC’s “This Week.”

“It’s troubling that some experts are telling us this was done by the Russians for the purpose of helping Donald Trump.”

Trump on Monday said it is laughable that Russia would help him defeat Clinton, the Democratic presidential nominee.