The real Slim Shady has, indeed, stood up — against presidential candidate Vivek Ramaswamy rapping his tunes.

Eminem sent a cease-and-desist letter to Ramaswamy’s campaign team after the Republican Presidential Hopeful rapped his hit “Lose Yourself” at the Iowa State Fair.

A representative for Eminem’s music license, BMI, informed the campaign’s lawyer that it had “received communications from Marshall B. Mathers III, professionally known as Eminem, objecting to the Vivek Ramaswamy campaign’s use of Eminem’s musical compositions (the ‘Eminem Works’) and requesting that BMI remove all Eminem Works from the Agreement.

“This letter serves as notice that the Eminem Works are excluded from the Agreement effective immediately,” continued the letter first obtained by the Daily Mail.

“BMI will consider any performance of the Eminem Works by the Vivek 2024 campaign from this date forward to be a material breach of the Agreement, for which BMI reserves all rights and remedies with respect thereto.”

The letter came just 11 days after Ramaswamy performed “Lose Yourself” at the Iowa State Fair in response to Gov. Kim Reynolds asking him to name his favorite walkout song.

“Vivek just got on the stage and cut loose,” a spokesperson for his campaign told the Mail following the cease-and-desist letter.

“To the American people’s chagrin, we will have to leave the rapping to the real Slim Shady.”

Ramaswamy, 38, has long been a fan of the Detroit rapper — and even performed his own libertarian-themed raps under the stage name Da Vek when he was an undergraduate student at Harvard.

“I did not grow up in the circumstances he did,” the Republican told the New York Times earlier this year, noting that he was the son of successful Indian immigrants. “But the idea of being an underdog, people having low expectations of you, that part speaks to me.”

He then said Eminem is a “guy in every sense who was not supposed to be doing what he did.”