A clip from the movie “Iron Man 2” went viral on social media after Marvel fans discovered that billionaire Elon Musk made a cameo appearance alongside Robert Downey Jr. as Tony Stark.

Ashley St Clair has fired back at Elon Musk after the Tesla billionaire claimed he had already given her $2.5 million—despite ... you petulant man-child,” she told Musk, who is under fire ...