• President Joe Biden called Fox News reporter Peter Doocy "a stupid son of a bitch" on a live microphone Monday, after Doocy asked Biden if inflation was a political liability for him.
• Doocy regularly baits Biden during press events, shouting over other reporters and trying to get the president off guard.
• Biden has a long record of swearing on hot microphones, such as in 2010, when he was caught cursing when celebrating the passage of the Affordable Care Act with then-President Barack Obama.

WASHINGTON – President Joe Biden called Fox News White House reporter Peter Doocy "a stupid son of a bitch" Monday on a live microphone, after Doocy asked Biden whether inflation was a political liability for him.

The verbal slip took place during a White House event on Biden administration efforts to combat inflation. After the president complained that all the press questions were about the military buildup around Ukraine, Doocy shouted: "Will you take questions about inflation? Do you think inflation is a political liability ahead of the midterms?"

Thinking his microphone was turned off, Biden responded sarcastically: "No, that's a great asset. More inflation."

He added, "What a stupid son of a bitch."

Doocy appeared on Fox News after his exchange with Biden, where "The Five" co-host Jesse Watters joked with his colleague: "I think the president's right. You are a stupid S.O.B."

A smiling Doocy played along, "Yeah nobody's fact-checked [Biden] yet and said it's not true."

On the program "Special Report," when host Bret Baier asked Doocy about the "colorful exchange" with the president, Doocy replied: "He didn't want to take any questions off-topic. He was at an event about inflation. I asked about inflation. Now wait to see if the White House has to bleep that on the transcript."

Baier then asked: "What did the other reporters say about that? Did you talk with them?" Doocy replied: "They actually had to tell me he had said it, because I couldn't hear anything over the shouting of the wranglers. So now the clip will live on."

Doocy said later Monday evening that Biden called him later in the afternoon to apologize for the remark. The White House did not respond to CNBC's request for comment.

Doocy regularly baits Biden during press events, shouting over other reporters and trying to catch the president off guard.

Biden has a long record of swearing on hot microphones, so the comments were not entirely out of character.

In 2010, Biden was famously caught cursing when celebrating the passage of the Affordable Care Act with then-President Barack Obama.

With inflation at levels not seen in decades, the White House has struggled in recent months with how to communicate with the public about the efforts it is making to help bring prices down long term. In the short term there is little that Biden, or any president, can do to reverse macroeconomic trends like increased consumer demand and supply chain snarls in Asia.