The president was caught on camera slamming Doocy after the reporter asked him at the end of a photo opportunity, “Do you think inflation is a political liability in the midterms?”
“It’s a great asset – more inflation. What a stupid son of a bitch,” Mr Biden replied on a microphone in the East Room.
Doocy laughed off the incident when he appeared on Fox News and said he had not even heard Mr Biden’s response because of all the noise in the room.
“Yeah, no one has fact checked him and said it’s not true,” Doocy told host Jesse Watters, who had joked he agreed with the president’s assessment.
Later on Monday night, Doocy said that Mr Biden had already called him to personally apologise.
“Within about an hour of that exchange, he called my cellphone and he said, ‘It’s nothing personal, pal,’” Doocy told Sean Hannity on Fox News.
“And we went back and forth and we were talking about just kind of moving forward, and I made sure to tell him that I’m always going to try to ask something different than what everybody else is asking.
“And he said, ‘You’ve got to.’ And that’s a quote from the president. So I’ll keep doing it.”
Doocy told Hannity that it was a “nice call” and that he “appreciated” Mr Biden taking the time to “clear the air” despite other events happening in the world.
Following the incident, CNN White House correspondent Kaitlan Collins told host Jake Tapper that the president was fully aware that he had a microphone in front of him when he made the remark.
“The microphone was literally right in front of him, it’s not like he was walking into a back room and forgot that he had one clipped on his lapel, it was right in front of him,” laughed Tapper.
It is the latest confrontation between Doocy and Mr Biden, who butted heads last week as the president gave his first press conference of 2022.
On that occasion Mr Biden was left chuckling at the podium after Doocy asked him why he was pulling the United States “so far to the left.”
Mr Biden could be heard laughing as he listened to the question before he defended himself as a “mainstream Democrat” and “not Bernie Sanders.”
“Well, I’m not. I don’t know what you consider to be too far to the left, if in fact we are talking about making sure we have the money for Covid, making sure we had the money to put together the bipartisan infrastructure, making sure we were able to provide for those things, that in fact we significantly reduced the burden on working class people, I don’t know how that is pulling to the left,” replied Mr Biden.
“You guys are trying to convince me that I am Bernie Sanders, I’m not, I like him but I’m not Bernie Sanders, I’m not a socialist, I’m a mainstream Democrat.”
Washington politicians calling Doocy “dumb” is something of a bipartisan tradition, as he was slammed by Republican Senator John McCain in 2017 when he asked him if he would block Donald Trump’s agenda.
“Why would you say something that stupid? Why would you ask something that dumb?” Senator McCain replied.
“My job as a United States Senator, a Senator from Arizona that I was just re-elected to, you mean that I am somehow going to behave in a way that I am going to block everything because of some sort of personal disagreement? That is a dumb question.”