Michael Moore teases 'secret project' aimed at Donald Trump, Roseanne Burr: 'They will rue the day they knew me'

Fahrenheit 9/11 director Michael Moore teased a “secret” documentary involving Donald Trump and Roseanne Barr on Wednesday. He shared on Twitter a throwback clip of him as a guest alongside Trump on The Roseanne Show, Barr's talk show in the late 90s.

The tweet was accompanied by the caption: “I know Roseanne. And I know Trump. And they are about to rue the day they knew me...”

In the video, the then-New York real estate mogul is seen praising the Oscar-winning documentary filmmaker's 1989 film, Roger & Me, about the consequences of GM CEO Roger Smith's downsizing efforts on Moore’s hometown of Flint, Michigan.

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“It was terrific, I tell you. I loved what he did,” Trump tells Moore in the segment. “If I was Roger, I wouldn’t have liked it. But I enjoyed it.”

“I hope he never does one on me,” Trump added.

Donald Trump (L); Michael Moore. Images via Twitter

But, going by the banner on Moore's website, Trump should be concerned. A message posted on the site reads: “I’ve been working on a secret project for the last few months.”

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Moore, a longtime champion of liberal causes and outspoken critic of Trump, gained fame with his gun violence documentary Bowling for Columbine for which he won an Oscar in 2003. His other films include Fahrenheit 9/11, which was a critical look at the presidency of George W. Bush and the wars in Iraq and Afghanistan.