We've gotta hand it to the folks at Break.com for posting some of the scariest prank videos on the web, and while this particular stunt doesn't qualify as a practical joke, it's absolutely terrifying for anyone with even the slightest fear of heights. It was also shot in Russia – a pretty reliable source for insanely heart-stopping camera footage (the recent clip of a Russian science teacher “slashing” a student's arm is a gruesomely clever favorite).
This video focuses on a small group of people (four, including the camera operator) taking a leisurely stroll in a rather unusual spot: what appears to be the top of a towering factory smokestack. That scenario alone is chilling enough, but the real sell comes when the camera peers over the tower's narrow brick opening and points down... and down... to show a drop of several hundred feet.
No net, no harnesses, no climbing gear. The poster doesn't mention how the people even got up there in the first place. Still, regardless of being less than an inch from horrible death at all times, these climbers seem pretty upbeat about the whole thing. Still feeling brave? Check out footage of the world's tallest waterslide.