On Thursday, Donald Trump held what was billed as a “social media summit” that, bizarrely enough, didn’t invite representatives from tech giants such as Google, Facebook and Twitter.

During his freewheeling rant, the 73-year-old U.S. president aired an array of grievances, including his complaints that his tweets no longer gain the kind of “traction” they used to, alleging social media platforms have a liberal bias and are censoring conservative voices.

At one point, Trump circled around to Arnold Schwarzenegger, who took over as host of “The Celebrity Apprentice” after Trump launched his presidential bid.

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“Arnold Schwarzenegger… You know what? He died,” Trump told the audience, apparently referring to NBC cancelling the show after the “Terminator” star’s single season. “I was there.”

After Yahoo News’ White House correspondent Hunter Walker quoted Trump’s Schwarzenegger-bashing remarks on Twitter, the former California governor offered a terse response that shifted the spotlight to the president’s still-hidden tax returns and the shady secrets they may contain.

Schwarzenegger and Trump have been sniping at each other on social media since 2016, when Schwarzenegger, a Republican, announced in 2016 he would not be casting his vote for Trump.