I really have mixed feelings about this yet I still can't stop laughing. My grandma would be scared and pissed due to her bones being brittle and I'd hate to see the woman break something all because these kids want to have spontaneous fun, but at the same time it's hard to feel like they have any harmful intent.
I don't know if I want to rate this due to the liveleak description. What a bunch of shits.
They wanted to frighten and humiliate a defenseless old woman. If they just wanted to show off their strength, they could have swung around some heavy inanimate objects.