The popular YouTubers The Slow Mo Guys, are known for trying crazy experiments so they can film them and replay them in incredibly detailed slow motion. Their stunt in this video is to see how long one of them can stay under a huge balloon that is being filled with water. When the weight becomes too great, they burst the balloon and replay the moment in slow motion! Dan gets the short straw and takes his place in the middle of the trampoline that they use for a lot of their stunts. He lays down, places the balloon on his stomach and starts filling it.
When he decides he's had enough weight, he bursts the balloon. The water rushes over him and in seconds is gone!