FULL TITLE........Donald Trump DOES have his finger on the red button... to order Coca Cola from a White House butler straight from his Oval Office desk.........................While many across the world are nervous at the prospect of President Donald Trump pressing a big red button in his office, it has emerged he does this on a daily basis. A rectangular box on his desk, containing the button, has long been used by commanders-in-chief to communicate with White House staffers. And it has now turned out that Trump uses it to order glasses of Coca-Cola, delivered by a butler.