Kablooey Balls
Balls that scream like your little brother when he gets grounded. They make everything around them look like a war zone.
My Kablooey Ball went off during lunch. Now the cafeteria looks like a battlefield.
I brought one to the mall. Now the escalator is broken and my mom is screaming.
I set one off in the gym. Now the basketballs are flying and the coach is mad.