President Biden, in 2020, took aim at then-President Donald Trump for awkwardly walking down a ramp at a commencement speech — remarks that came back to haunt him on Thursday when he took a tumble over a sandbag at a commencement ceremony at the U.S. Air Force Academy.

Trump took heat from critics, including Biden, when he walked gingerly down the ramp at a West Point commencement ceremony in September 2020. Then-candidate Biden, in the midst of a presidential campaign, took a swipe at the Republican incumbent.

"Look at how he steps and look at how I step. Watch how I run up ramps and he stumbles down ramps," Biden joked. "Come on."

BIDEN TUMBLES DURING AIR FORCE COMMENCEMENT CEREMONY 

Biden fall

President Biden is helped up after falling during the graduation ceremony at the United States Air Force Academy, just north of Colorado Springs in El Paso County, Colorado, on Thursday. (BRENDAN SMIALOWSKI/AFP via Getty Images)

The New York Times ran the headline, "Trump’s Halting Walk Down Ramp Raises New Health Questions."

But Biden hit the deck on Thursday after having delivered the Air Force Academy’s commencement address earlier in the day.

The White House said the president tripped over a sandbag and that he was not injured by the fall.

It isn’t the first time the octogenarian president has stumbled. In 2021, he fell on the steps while boarding Air Force One at Joint Base Andrews.

WHITE HOUSE BLASTED FOR RESPONSE TO AMERICANS WHO BELIEVE BIDEN IS CORRUPT: 'THINKS YOU'RE STUPID'

Former President Donald Trump arrives to meet with local Republican leaders at the Machine Shed restaurant in Urbandale, Iowa, on Thursday.

Former President Donald Trump arrives to meet with local Republican leaders at the Machine Shed restaurant in Urbandale, Iowa, on Thursday. (Al Drago/Bloomberg via Getty Images)

The latest tumble will likely fuel ongoing concerns about Biden’s health and age, given he is running for re-election, which would keep him in office until early 2029 when he would be 86.

Trump, who is also running for another term in the White House, was told about Biden’s fall on Thursday — and immediately referenced the ramp controversy in 2020.

CLICK TO GET THE FOX NEWS APP

"Well, I hope he wasn’t hurt, but the whole thing, look — the whole thing is crazy. You gotta be careful about that… because you don’t want that — even if you have to tiptoe down a ramp," he said

Fox News' Thomas Catenacci and Joseph Wulfsohn contributed to this report.