Someone's Completely Lost His Marbles.

by tristero

And he happens to be the president of the United States:
"I would suggest moving back," Bush said as he climbed into the cab of a massive D-10 tractor. "I'm about to crank this sucker up." As the engine roared to life, White House staffers tried to steer the press corps to safety, but when the tractor lurched forward, they too were forced to scramble for safety."Get out of the way!" a news photographer yelled. "I think he might run us over!" said another. White House aides tried to herd the reporters the right way without getting run over themselves. Even the Secret Service got involved, as one agent began yelling at reporters to get clear of the tractor. Watching the chaos below, Bush looked out the tractor's window and laughed, steering the massive machine into the spot where most of the press corps had been positioned.
And of course, immediately afterwards, Dick Cheney shot 'em all in the face.

Special note to those amongst us who think I don't understand towel-slapping rough play fratboy-style pranks. You're absolutely right, when the president does them. In Fort Worth Texas, on the morning of his death, John F. Kennedy was filmed accepting the gift of a cowboy hat while appearing at the Chamber of Commerce. He was urged to put it on so the press could take pictures. He looked at it, clearly decided it would be undignified for the president of the United States to do so. So he smiled broadly and said he'd be glad to pose in it, back in Washingon, the following Monday.