First, Billie Eilish called out the billionaires. Now, she's taking aim at the man who could become the world's first trillionaire. Eilish, 23, took to her Instagram Stories on Thursday, November 13, to call Elon Musk a "f***ing pathetic p**** bitch coward." The public call-out came after she reshared an Instagram carousel originally posted by My Voice, My Choice, which began with an image of Musk, 54, and text that read, "Elon Musk became the world's first trillionaire, here's what he could do with it.