President Biden showed up to vote early Monday in his Delaware hometown and ended up standing in line behind a man wearing a vulgar pro-Donald Trump hat.

The red hat, which from a distance resembled Trump’s classic Make America Great Again (MAGA) merch, read upon closer inspection: “Elect That Motherf—er Again!!”

Photos showed Biden, 81, lingering roughly nine spots behind the unidentified Trump backer in line outside the Wilmington polling place.

The retiring president, who remains the commander-in-chief for less than three months, waited about 37 minutes to cast his ballot.

Biden has had other unfortunate photo ops involving pro-Trump hats — including briefly wearing one during a Sept. 11 visit to Shanksville, Pa., which Republicans used for social media memes suggesting that he’s unhappy with his forced retirement and replacement by Vice President Kamala Harris atop the Democratic ticket.

Biden was pressured by his peers to end his re-election campaign following a dismal June 27 debate with Trump, which prompted a mutiny over the president’s apparent cognitive decline.

Trump, 78, has alleged that the outgoing president is resentful over the undignified end to his career.

Biden insisted to reporters Monday that he has no regrets about abandoning his bid for a second term.

Asked by a reporter if it was bittersweet to have voted for Harris, 60, rather than himself, Biden answered: “This is sweet.”