Comedian Bill Maher said in a new clip from his stand-up special that the U.S. has never had a president as “aggressively stupid” as President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE.

Maher jokes during the clip from "Bill Maher: Live from Oklahoma" that the U.S. has had presidents before “who didn’t know much.”

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“We’ve had dumbass presidents, but we’ve never had one like this that is so aggressively stupid,” he said.

The HBO host said that the president “takes pride that you cannot get information into his head.”

“He will insist like, that the stealth bomber is literally invisible. Or there’s such a thing as clean coal. Or that global warming is a hoax because it snows in the winter,” Maher said.

“It’s like saying the sun isn’t real because last night it got dark,” he quipped.

Maher has frequently criticized Trump during his weekly HBO show “Real Time with Bill Maher.”

He faced some criticism last month for saying that he’s hopeful a recession will come if it means getting rid of Trump.

"Sorry if that hurts people but it's either root for a recession or you lose your democracy," Maher said at the time.