Insiders have speculated about a potential falling-out between Donald Trump and Elon Musk for months. It never seemed to happen — until Thursday.

Musk, relishing in his relevance, seemed to be parked on X, hurling whatever he could grab. When one user noted that the U.S. government would be forced to walk away from the International Space Station and its upkeep without Musk’s SpaceX fleet, the tech savant amplified it: “Go ahead, make my day.”