Kathy Griffin eviscerated conservative commentator Tomi Lahren on Twitter after Lahren told former first lady Michelle Obama to “sit down” after she called her husband, former president Barack Obama, a great president.

“Oh really you dime store Barbie? Mrs. Obama may go high, but I certainly won’t,” Griffin wrote on Monday. “Go fuck yourself, Tomi. You evil, horrible shell of a human being.”

“Sit down, Michelle” @TomiLahren says....



Oh really you dime store Barbie?



Mrs. Obama may go high, but I certainly won’t. Go fuck yourself, Tomi. You evil, horrible shell of a human being. https://t.co/itEn9Q0Paq — Kathy Griffin (@kathygriffin) September 24, 2018

On Monday, Lahren angrily tweeted about a speech the former first lady gave at a rally in Las Vegas.

“Michelle Obama said we ‘had’ a great president. By what measure?” Lahren wrote, ending her tweet with: “Sit down, Michelle.”

Michelle Obama said we “had” a great president. By what measure? Not in economic growth. Not in border enforcement. Not in strength on the world stage. Sit down, Michelle. — Tomi Lahren (@TomiLahren) September 24, 2018

That post sent Twitter users into a tailspin, with Lahren’s mentions regarding the tweet serving as a battleground between Obama supporters and her own fans.

Michelle Obama was speaking at a rally for When We All Vote, a nonprofit initiative she co-chairs that aims to register voters ahead of the November primary, and she talked about putting “qualified people that we trust” in office.

“Here’s what we have to do: If we want qualified people that we trust, then people have to vote. Because you can’t vote some of the time and then sit out,” she said, before adding about her husband: “You know, we saw that happen. We experienced that. But we had a great president.”

Michelle Obama: “If we want qualified people that we trust, then people have to vote.” pic.twitter.com/tN9XrBgbua — Fox News (@FoxNews) September 24, 2018

Griffin has lambasted Lahren several times on Twitter before. Earlier this year, she quipped that many “dipshits” are named Tomi or Tami. Just a few weeks ago, Griffin tweeted that Lahren didn’t “even know the difference between digital and broadcast” and called her “thirsty.”