Jon Stewart mocked President TrumpDonald TrumpWhat blue wave? A close look at Texas today tells of a different story Democrats go down to the wire with Manchin Trump's former bodyguard investigated in NY prosectors' probe: report MORE in in the comedian's first appearance on late-night television since the inauguration, hitting Trump Tuesday night for signing numerous executive orders during his first two weeks as president. 

"It has been 11 days, Stephen — 11 f---ing days," Stewart, dressed as Trump with a floor-length red tie and a mock dead animal wrapped around his head, said on "The Late Show with Stephen Colbert." "The presidency is supposed to age the president, not the public."

Impersonating Trump, Stewart mocked the number of executive orders the president has signed during his time in the White House.

"I, Donald J. Trump, am exhausting because it is going to take relentless stamina, vigilance and every institutional check and balance this great country can muster to keep me, Donald J. Trump, from going full Palpatine,” Stewart said, referencing a villain from the Star Wars franchise.

Stewart read a new Trump executive order, saying the Great Wall of China will be the U.S.-Mexico border.

“Boom. Done. China’s wall sent to us. Boom. Done,” Stewart said.

Stewart also hit the Trump administration for "speaking bullshit."

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“I, Donald J. Lincoln Kennedy Trump III, do pronounce America now finally has an official language,” Stewart said. “The new official language of the United States is bullshit. I, Donald J. Trump, have instructed my staff to speak only in bullshit.”

Stewart also encouraged Trump opponents to resist his policies.

"We have never faced this before: purposeful, vindictive chaos, but perhaps therein lies the saving grace of my, Donald J. Trump's, presidency,” Stewart continued. “No one action will be adequate, all actions will be necessary, and if we do not allow Donald Trump to exhaust our fight, and somehow come through this presidency calamity-less and constitutionally partially intact, then I, Donald J. Trump, will have demonstrated the greatness of America — just not the way I thought I was gonna."

Trump has signed 20 executive orders in his first two weeks in the White House.

Stewart ended his iconic run on "The Daily Show with Jon Stewart" in 2015, just as the presidential election got underway.