Warren sparked the quarrel by calling Musk a freeloader in response to the SpaceX founder being named Time magazine's "Person of the Year."
"Let’s change the rigged tax code so The Person of the Year will actually pay taxes and stop freeloading off everyone else," Warren tweeted on Monday.
Musk fired back at Warren by telling her to "Stop projecting" and shared a link to a 2019 Fox News op-ed titled: "Elizabeth Warren is a fraud – Her lies about being Native American disqualify her from presidency, Senate."
The article spotlights, "Warren listed herself on the 'Minority Law Teacher' list as Native American in the faculty directory of the Association of American Law Schools (AALS) from 1986 to 1995."
Musk also told Warren, "You remind me of when I was a kid and my friend’s angry Mom would just randomly yell at everyone for no reason."
He then replied, "Please don’t call the manager on me, Senator Karen."
The pejorative term "Karen" is slang for a middle-aged white woman who is angry, obnoxious, and entitled.
Musk contended, "And if you opened your eyes for 2 seconds, you would realize I will pay more taxes than any American in history this year." He advised the senator, "Don’t spend it all at once … oh wait you did already."
Musk – the world's richest person with a net worth of $245 billion – will likely pay billions in taxes this year, according to estimates.
"The eccentric billionaire (and the world’s richest person) likely owes the federal government at least $8.3 billion for 2021," Forbes reports, adding, "Only the Internal Revenue Service knows who the largest taxpayer in American history is, though."
CNN speculates, "So his federal tax bill to date for 2021 stands at $7.6 billion, with a chance it could rise to nearly $10 billion or more by year's end."
Reid joined the fray by rushing to the defense of the Democratic politician. She also accused Musk of "misappropriating black vernacular for misogynistic purposes" by using the popular insult "Karen."
"Elon wasn't happy, so he did what he always did, and stomped his little feet and insulted Senator Warren," Reid said on her MSNBC TV show. "Calling her an 'angry mom' and referring to her as 'Senator Karen.'"
"For so many reasons – being a freeloader – and a selfish and disrespectful one – and for misappropriating black vernacular for misogynistic purposes, Elon Musk is the absolute worst," the progressive host told her viewers before interviewing Warren on her show.
Not one to back down from controversy, Musk shot back at Reid – dubbing her "(Lack of) Joy Reid." The 50-year-old billionaire entrepreneur also said Reid is a "lobbyist for Sen. Karen," referencing the previous insult he launched toward Warren.
During her appearance on "The ReidOut," Warren continued to attack Musk over his taxes.
"The world’s richest freeloader evidently has a very thin skin," she told Reid. "But you know the part that makes me angry about this? It’s on behalf of every public school teacher, every waitress, every computer programmer, every street cleaner who actually paid taxes and that means they paid more than Elon Musk did in federal income taxes. And that’s just not right and it means the system is broken."
"But the days when these guys not only get to rake it all in but then rub everybody else’s nose in it while they head off in outer space and declare how they did this all on their own when they were subsidized by the federal government and subsidized by every waitress and public school teacher who paid their taxes," Warren continued. "This is wrong. And Elon Musk needs to eat a big dish of that."
Elizabeth Warren To Elon Musk: The World's Richest Freeloader Evidently Has Very Thin Skin www.youtube.com