Tech tycoon and self-anointed lord of “Dark MAGA” Elon Musk has clapped back at pop idol Billie Eilish after she took him down in a series of Instagram posts.

“She’s not the sharpest tool in the shed,” the Tesla CEO bristled in a decidedly more restrained riposte to what the “Birds of a Feather” hitmaker had written about him only days before.

Eilish’s labeling of Musk as a “f---ing pathetic p---y b---h coward” on Friday comes amid reports that the SpaceX founder and newfound icon of the online far right is on course to become the world’s first trillionaire.

Shareholders at Tesla earlier this month voted to approve a $1 trillion pay package in the form of a new stock grant for the electronic car manufacturer’s founder.

Eilish began her Instagram spree by reupping a post from a Europea

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