President Trump woke up in a feisty mood on Wednesday. At 7:25 a.m., he was on Twitter doing what he does best — correcting the "fake news" and calling out the fakers.

Trump was talking about Florida Democrat Rep. Frederica Wilson. She said on Tuesday that she had overheard Trump talking to the widow of Army Sgt. La David Johnson, killed in Niger two weeks ago. Wilson told NBC Miami that she heard the president's comments to Myeshia Johnson over a speakerphone as the pair drove together to meet his body.

"He said, 'But you know he must've known what he signed up for,'" the Democrat recounted as she described the three- to five-minute call. "Everyone knows when you go to war you could possibly not come back alive but you don't remind a grieving widow of that," Wilson said. "That's so insensitive."

Trump "didn't even remember his name," Wilson claimed Myeshia telling her after the call ended, Wilson said on MSNBC's Morning Joe on Wednesday. "She hung up the phone, she looked at me and said, 'He didn’t even remember his name,'" Wilson said. "That’s the hurting part."

"He was almost like joking," she said. Wilson also told CNN that Myeshia was "very distraught after the call."

“She has just lost her husband, she was just told that he cannot have an open casket funeral which gives her all kinds of nightmares about what his body must look, what his face must look, and this is what the president of the United States says to her,” Wilson told CNN.

"This gentleman has a brain disorder, and he needs to be checked out. ... We should be praising his family, not insulting them," said Wilson, who, not coincidentally, said in May that Trump was “on the brink of impeachment.”

But Trump said Wednesday that her version was "totally fabricated" and warned that he has "proof." He did not, though, provide that proof.

At a Monday White House press conference, Trump addressed the deaths of four soldiers who died in action in Niger. "I felt very, very badly about that," Trump said. "I always feel badly. It is the toughest calls I have to make are the calls where this happens, soldiers are killed."