Oh, the rush. Whether it's a first kiss or skydiving over the Swiss Alps, we've all felt it at one time or another, and these guys got seriously hooked. The Flying Frenchies, a collective of adrenaline junkies who perform for Redbull, are always on the hunt for their next rush, becoming more and more experimental by designing their own dare-devil tasks, like the one in this video. Taking to the Vercors Mountain range in France, a surfboard is placed over a zipline at nearly 2,000 feet in the air. With one guy on top surfing and another on the bottom to act as a counterweight, they ride down at speeds of up to 47mph before base jumping into the valley below. It's insane, terrifying, but awesome to watch. Just don't ask us to get up there.