Colson Newton, 9, proves he’s definitely not all thumbs as his cup-stacking competition prowess is caught in the camera’s strobe light while classmate Matthew Heck, 9, checks to see how he’ll stack up against his competition at Aspengrove School Thursday. Students took part in a Guinness World Record attempt for the most people sport stacking at multiple locations in one day. More than 444,000 stackers in more than 2,500 schools and organizations in 28 countries participated in the event.