This INSANE Slam Dunk by a 17-Year-Old Will Blow Your Mind

In the video, Mississippi high-school senior Shelby McEwan pulls off an astonishing left-handed dunk from behind the free-throw line. McEwan flies above the paint with grace, nailing the slam and capping it off with a slick celebratory dance. It's one of the most incredible things we've ever seen. The 6'3'', 150-pound guard isn't even ranked in Rivals.com'st of the Top 150 prospects for the class of 2015, but thanks to the freakish feat, we definitely know his name now.