The first lady of Brazil turned heads when she dropped an f-bomb directed at Tesla CEO Elon Musk during an official event over the weekend.

At the time, Brazil’s first lady, Janja Lula da Silva, was speaking about misinformation on social media during a pre-G20 social event on Saturday. The G20 summit began on Monday in Rio de Janeiro.

Lula, who is married to Luiz Inácio Lula da Silva, stopped mid-speech when she heard a ship’s horn blaring in the distance.

“I think it’s Elon Musk,” the first lady joked in Portuguese. “I’m not afraid of you, by the way.”

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“F–k you, Elon Musk,” Lula added in English, prompting cheers from the audience.

The clip, which was posted on X, drew the attention of Musk, who responded with laughing emojis.

“They will lose the next election,” the entrepreneur wrote.

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Turkish President Recep Tayyip Erdoğan and his wife, Emine Erdoğan, are welcomed by Brazilian President Luiz Inácio Lula da Silva and his wife, Janja Lulu da Silva, as they pose for a photo during the G20 Leaders Summit in Rio de Janeiro on Nov. 17, 2024. (Turkish Presidency/Handout/Anadolu via Getty Images)

Brazil banned X in September, prompting outrage across the world. Brazilian Supreme Court’s Justice Alexandre de Moraes imposed the ban, citing misinformation on X, which the judge felt was not adequately moderated on the platform.

The country lifted the ban a month later, and de Moraes wrote that the decision “was conditioned, solely, on [X’s] full compliance with Brazilian laws and absolute observance of the Judiciary’s decisions, out of respect for national sovereignty.”

“X is proud to return to Brazil,” X said in a statement at the time. “Giving tens of millions of Brazilians access to our indispensable platform was paramount throughout this entire process. We will continue to defend freedom of speech, within the boundaries of the law, everywhere we operate.”

Janja Lula da Silva speaks to supporters during a gathering with artists, politicians and other personalities one week before the presidential elections at Auditório Celso Furtado on Sept. 26, 2022, in São Paulo, Brazil. (Alexandre Schneider/Getty Images)

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The Brazilian first lady’s joke took place two days before the G20 summit officially began. President Biden was present at the summit, though he did not appear during the annual family photo with fellow world leaders and missed the photo-op “for logistical reasons,” the White House said.

Reuters and the Associated Press contributed to this report.

Brazil’s president opened the second day of the G20 Summit by calling for more action to slow global warming, saying developed nations must speed up their initiatives to reduce harmful emissions.

Luiz Inácio Lula da Silva focused Tuesday’s session on environmental challenges, saying developed nations should consider moving their 2050 emission goals forward to 2040 or 2045.

“The G20 is responsible for 80% of greenhouse effect emissions,” Lula said. “Even if we are not walking the same speed, we can all take one more step.”

During the summit, which was held at Rio de Janeiro’s Modern Art Museum, G20 leaders gathered to discuss changes in the world order from heightened global tensions to changes on the international political stage.

The agenda focused on working to reinforce multilateral cooperation before US President-elect Donald Trump assumes office in January.

EU leaders also took the opportunity to hold bilateral meetings on the sidelines of the summit.

In a meeting with Chinese President Xi Jinping, French President Emmanuel Macron reaffirmed France’s commitment to strengthening relations with China and insisted that the two countries shared the same views on promoting peace in Ukraine.

“The world in which we live, as you just reminded us, is made up of instabilities, tensions and growing wars. And I believe that we truly share a common vision in upholding the United Nations Charter and promoting a peace agenda,” Macron told Jinping.

“We meet again on the 1000 day of the War of Aggression launched by Russia against Ukraine, and I know that you share, as we do, the desire for a lasting peace, respectful of the United Nations Charter, and that you share, as we do, the same concern after Russia’s bellicose and escalating declarations of nuclear doctrine,” he added.

A joint statement signed by representatives of the G20 nations on Monday night called for urgent humanitarian assistance and better protection of civilians caught up in conflicts in the Middle East, plus affirmed the Palestinian right to self-determination.

It also included Brazil’s proposal to tax billionaires’ income by 2%, focused on ways to eradicate world hunger and pledged to work for ‘transformative reform’ of the UN Security Council.