A dad pranks his kids by convincing them to lay under a trampoline while he fills up a water balloon. He reckons there was about 200 litres in it when it burst.
It's not terribly new, so apologies if you've already seen it.
This dad convinced his kids to lay under a trampoline while he filled up a water balloon until it was bigger than all the kids combined. It finally exploded and soaked all the kids while the parents laughed. Original Link: https://www.youtube.com/watch?v=87nd846a3-8