We didn't know there was a World Sport Stacking Association, but we've found out--thanks to Steve Purugganan, or "Speedy Stevie" as we've decided to call him. The Longmeadow resident is the new Cup Stacking World Champion, owing to his uncanny ability to put cups on top of one another with great alacrity. There are several types of stacking, including 3-3-3 and 3-6-3, meaning you stack up pyramids of 3, 3, and 3 cups (so......