Biden rambles about watching Fox News, kids flipping him the bird in first post-State of the Union remarks

President Biden said Friday that he had stayed up until at least 2 a.m. watching Fox News analysis of his State of the Union speech to Congress — before saying he was disappointed seeing vulgar protest signs and children making obscene gestures at him when he travels.

“I was watching on television last night, about two in the morning, after we got back to the house,” Biden said at a Philadelphia-area campaign rally, his first public address since his annual congressional appearance.

“I had the TV on and there was a Fox News commentator saying, ‘You know, Biden is changing from trickle-down economics to build from the middle out and the bottom up. It is going to ruin America.’

“Ruin America? We have the strongest economy in the world right now,” he added.

The 81-year-old president, who is seeking a second term in November against presumptive Republican nominee Donald Trump, did not identify the Fox personality who he said made the remarks.

Biden also slammed supporters of Trump, 77, for rudely greeting him when he travels the country — moments after telling reporters he may refuse to debate the former president.

“Did you ever think — those of you who are over 40 — did you ever think we’d be in a situation where we talk to each other like the way we talk these days?” Biden asked, “where you ride down the street and there’s a Trump banner with a ‘F— You’ on it and a 6-year-old kid putting up his middle finger?”

“It demeans who we are. That’s not America,” he lamented.

The notoriously gaffe-prone president, who made it through most of his State of the Union speech without stumbles — with the exception of mispronouncing the first name of Laken Riley, the 22-year-old Georgia nursing student who was murdered allegedly by an illegal immigrant — seemed to struggle Friday with his ever-present teleprompter.

Biden said at one point that the 2021 Capitol riot happened on “July the sixth” — a verbal error that he’s made before — before quickly correcting himself to say January.

At another point, Biden said “we [sic] added more to the national debt than any president in his term in all of history” — when the context made clear he intended to say “he” in reference to Trump.

The president concluded his speech with an off-the-cuff remark about how he had to ask first lady Jill Biden five times to marry him — saying the successful final attempt came after “I was down in South Africa trying to see Nelson Mandela,” a reminiscence that has drawn repeated fact checks and been labeled untrue.