Getting completely submerged in a 6-foot water balloon
This is the internet in 2017. We now have a slow-motion video of a fully grown man submerging himself in a giant 6-foot water balloon. Haha, progress!
Popping a water balloon underwater in slow-motion
Here's a great video from Warped Perception of a water balloon popped underwater and filmed in glorious slow-motion 4K using the Phantom Flex camera.