Forget everything you thought you knew about human water balloons.

Gav and Dan, the Slow Mo Guys, have taken YouTube by storm with their super slow motion videos. Using a $150,000 high speed camera, they film explosions, implosions, and everything in between – then they slow the footage down hundreds of times over. Their beautiful HD videos shed fascinating light on the physics behind everyday moments.

But now, it looks like they've run out of everyday moments, because this one is just weird. Four years ago, they filmed themselves popping a 6-foot water balloon. Now, in an impressive feat of grasping for straws, they filmed the same thing, but with one of them inside. It was up to Dan to be the human balloon.

Sources: The Slow Mo Guys