Former U.N. Ambassador Nikki Haley and entrepreneur Vivek Ramaswamy swung at each other during the third Republican primary presidential debate over their use of TikTok, with Haley calling her opponent scum.

Haley and Ramaswamy appeared at the third Republican debate on Wednesday, where the moderators asked each candidate whether they would ban TikTok, the China-owned social media platform popular among young people. Haley and the other candidates had spoken out in support of a ban. Ramaswamy, meanwhile, got flak from Haley in the last debate over his use of TikTok to promote his campaign. Ramaswamy attempted to turn this around on Haley by noting how her daughter, Rena, also used TikTok. The direct mention of her daughter struck a nerve with the former South Carolina governor.

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"Leave my daughter out of your voice," Haley retorted to Ramaswamy. "You're just scum."

Ramaswamy has targeted Haley throughout the debate over her "neocon" views of foreign policy. He even described her and Gov. Ron DeSantis (R-FL) as "Dick Cheney in 3-inch heels."

Haley defended her record on China by noting that any praise she may have offered the superpower was over its negotiations concerning North Korean tests of ballistic missiles.

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Ramaswamy previously defended his presence on the platform as a tool for reaching new voters. "The fact is that many young voters are [using it] & we're not going to change this country without winning," Ramaswamy posted on X, formerly known as Twitter.

Experts have raised the fear that the Chinese Communist Party could use national security laws to acquire data from ByteDance, TikTok's Chinese parent company, for surveillance purposes. The concern has grown enough that several members of Congress have introduced legislation to ban or restrict the app in the country. States have also moved to limit the app. Most notably, Montana banned it this year.