This video is pretty loud. Turn down your volume now especially if you have headphones on. This guy was showing off his flyboard. We've never seen a flyboard in person, but they seem pretty cool. They are a jet powered flying device that makes some seriously loud sounds, and this French inventor named Franky Zapata was showing his off recently. He is lucky that he was showing it off near a lake because he got the spins right after take off, could not control the flyboard and crashed into the lake. He's is going to be okay, but the crowd was less than impressed!