Jon Stewart jabs latest Trump flub: 'Under MAGA law, his name is now Ronny Johnson'

Jon Stewart on Monday night hit both President Joe Biden and former President Donald Trump on "The Daily Show," lamenting that this year's presidential election features a pair of nominees so past their primes that each has accused the other of having "soup ... where there should be brain."

In his opening monologue, Stewart laid into Biden over a video — since debunked as misleading — that purported to show Biden wandering away during a G7 summit event in Italy late last week.

"For President Biden it is his habit of seemingly staring at what can only be considered ghosts or out-of-frame paratroopers," Stewart said. "And then, somehow getting pulled back into frame, somehow giving the impression someone has just quantum-leaped into his body."

Stewart jabbed again at the 81-year-old president putting on his sunglasses in the clip, remarking. "No don't look directly at the sun, sir."

But the comedian spent the next two minutes leveling the former president, saying Trump was "basically tripping over his own d--- anytime he tries to capitalize on Biden's age."

Stewart pointed to Trump's appearance in Detroit over the weekend at a "Turning Point Action" event — a group founded by conservative activist and commentator Charlie Kirk — as exhibit A of the MAGA leader's cognitive slide.

It was here where a snarky Stweart said Trump "articulated his case for having best, brainful neurons ... smart."

The show played a clip of Trump attempting to criticize Biden at the event with a perhaps elementary- or middle-school-style dig: "Joe Biden has no plan, he's got absolutely no plan. He doesn't even know what the word inflation means."

"Oh, oh you didn't!" Stewart yells to laughs before mocking Trump's ill-advised jab at Biden's comprehension of the economic metric.

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"Joe Biden's so dumb," Stwart then deadpans, "he thinks inflation is a rise in the overall price level for goods and services in the economy as measured by the consumer price index over time. Oh s---!"

The comedian then jokes, "It turns out that is what is. I'm sorry. I'm being told that is what inflation is. But still! You tell him Donny T."

Stewart then launches into a devastating case against Trump.

"The case he's making to the American public is that he's sharpest tool in the shed. See if you can find the flaw in his logic just one sentence later."

The clip in question: Trump boasting about acing a cognitive test — and specifically shouting out his doctor, "Ronny Johnson." Only problem with that — his doctor was physician Ronny Jackson.

"Acing that cognitive test is a great point if only his doctor was named Ronny Johnson. And not actually named, Ronny Jackson. He got the guy's name wrong on his cognitive test!" Stewart said in disbelief.

He finished in classic Stweart fashion, ripping the Republican party for its seemingly never-ending faith in its fearless leader.

"The sad thing is under MAGA law, his name is now Ronny Johnson," said Stewart. "This is the way."

Watch the clip below or at this link.