George Clooney took time away from his busy schedule as an Academy Award–winning actor, director and tequila entrepreneur to, once again, wade into the political fray and address what he described as “rampant dumbf—ery” during a visit to “Jimmy Kimmel Live” on Tuesday night.

“Science has given us unprecedented knowledge of the natural world, from subatomic particles to the majesty of space,” Clooney said in the skit. “Science enables us to cure diseases, to communicate across great distances... even to fly.”

So what’s the problem?

“ ‘Tragically, though, the volumes of invaluable knowledge gathered over centuries are now threatened by an epidemic of dumb f—ing idiots saying dumb f—ing shit.’ ”

From there, Clooney, that quintessential Hollywood liberal, cut to a clip of Sen. James Inhofe using a snowball on the Senate floor to somehow disprove climate change, followed by footage of President Donald Trump talking about how the noise from windmills causes cancer.

Clooney has been an outspoken critic of the Trump administration, which he once described as a “a dark cloud hanging over our country.”

The actor launched into an endorsement of an organization devoted to battling an affliction that’s “infecting the minds of even the most stable geniuses: United to Defeat Untruthful Misinformation and Support Science, or UDUMASS.

Contributions, he joked, go toward convincing “idiots on Facebook FB, +0.78% and Twitter TWTR, -3.86% ” that climate change exists, that parents should vaccinate their kids and that “dinosaurs existed but not at the same time as people.”

Watch the full skit:

Separately, Clooney, the two-time “sexiest man alive,” told Variety on Tuesday night in Los Angeles he’s staying out of the Democratic primaries but he’s ready to put some financial heft behind beating Trump in the 2020 elecion.

“I’ll fundraise for anybody that is out there that’s interested in trying to make this president a one-term president,” he said. “At this point in the primary… we have to kind of see who ends up being the nominee so that you can really support them in the general and I think that’s a better move.”