Talking on the podcast The Joe Rogan Experience, Elon Musk slammed Jennifer Lopez.

The billionaire took aim at singer/actress Lopez due to her appearance at Kamala Harris’ Las Vegas rally during the presidential campaign.

Musk, who’s close to Donald Trump, was quick to “fight back,” by mentioning JLO’s dating history with Sean “Diddy” Combs, who’s currently awaiting trial for s*x tra:ffi:cking, and racketeering. Until then, he remains in federal custody at the Metropolitan Detention Center in Brooklyn, New York City. The ex-couple dated from 1999 to 2001.