President Trump said Friday he would beat Joe Biden “easily” in the 2020 presidential election, suggesting the former vice president could not have enough “energy” to hold the post—taking an apparent swipe at his age.

The president, departing the White House, was asked about Biden’s entrance into the Democratic primary field. Biden announced his presidential bid early Thursday morning, marking his third attempt at the White House.

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“I think we’d beat him easily,” Trump told reporters Friday.

Trump, 72, said he feels “young” and is ready for 2020, and another term for his administration.

“I feel like a young man. I am a young, vibrant man,” Trump said. “I look at Joe, I don’t know about him.”

The president’s comments seemingly were a shot at the age of Biden, who is 76.

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“I would never say anyone’s too old,” Trump said. “I know they’re all making me look very young both in terms of age and in terms of energy.”

Biden became the 20th candidate to join the crowded Democratic primary field Thursday. But Biden is not the oldest in the pack. Sen. Bernie Sanders, I-Vt., is 77 and Sen. Elizabeth Warren, D-Mass., is 69.

Should Trump be re-elected, he would be 74 on Jan. 20, 2021—Inauguration Day. Should the presidency go to one of the elder Democrats in the field—Biden would be 78; Sanders would be 79; and Warren would be 71.

Meanwhile, in a wide-ranging interview on “Hannity” Thursday night, Trump dismissed Biden’s candidacy, nicknaming him “Sleepy Joe,” and saying he’s “not the brightest bulb.” Trump also said that while the former vice president has name recognition, he won’t “be able to do the job.”