What do you do those days when your toddler is a bundle of energy, so much so that you can can barely keep up? Asks Tecca. In South Korea, a bunch of adults tapped into the youngsters’ boundless energy by putting them to work building the tallest Lego tower on Earth. It took 4,000 kids, five days, and 50,000 bricks to build a tower that stands at a height of 31.9 meters, beating France’s previous record of 31.6 meters…