Former U.S. President Donald Trump took shots at President Joe Biden after the 81-year-old dropped out of the presidential race on Sunday.

Trump accused the president of faking his COVID-19 diagnosis while also calling him a “threat to democracy” for staying in office for the remainder of his term.

“Biden never had Covid,” Trump wrote in one in a series of posts to his Truth Social account. “He is a threat to Democracy!”

Many, including those in his own party, have questioned Biden’s mental acuity and Trump joined the chorus, asking how Biden could continue in the Oval Office after acknowledging his fitness for another four years.

“Who is running our Country right now?” Trump asked. “It’s not Crooked Joe, he has no idea where he is. If he can’t run for office, he can’t run our Country!!!”

Trump then questioned whether the GOP should get a refund for spending “time and money” campaigning against Biden.

“Shouldn’t the Republican Party be reimbursed for fraud in that everybody around Joe, including his doctors and the Fake News Media, knew he was not capable of running for, or being, President? Just askin’?” he added.

Trump also appeared to be eager to schedule a debate with likely new election rival Vice President Kamala Harris, but had some conditions.

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“My debate with Crooked Joe Biden, the Worst President in the history of the United States, was slated to be broadcast on Fake News ABC, the home of George Slopadopolus, sometime in September,” he wrote, referring to ABC News anchor George Stephanopoulos, who has not been slated to moderate the faceoff.

Stephanopoulos’ colleagues David Muir and Linsey Davis were set as moderators but Trump wants a change in network.

“Now that Joe has, not surprisingly, has quit the race, I think the Debate, with whomever the Radical Left Democrats choose, should be held on FoxNews, rather than very biased ABC. Thank you! DJT.”

Biden announced he was dropping out of the election in rather surprising fashion, simply posting a lengthy letter to his social media accounts on Sunday afternoon.

Following the stunning reveal, the commander-in-chief expressed his “full support and endorsement” of Harris as his replacement.

“Today I want to offer my full support and endorsement for Kamala to be the nominee of our party this year,” Biden wrote on X. “Democrats — it’s time to come together and beat Trump. Let’s do this.”

However, while many agreed with Biden, including Bill and Hillary Clinton and House Speaker Nancy Pelosi, others feared she might not have a chance against Trump on Nov. 5.

Former President Barack Obama did not endorse Harris, merely saying Dems would pick an unnamed “outstanding nominee.”

The party has about five weeks to determine a new candidate before the Democratic National Convention, which is scheduled to start in Chicago on Aug. 19.