Students are asked to keep their cell phone on silent and locked up in their locker or backpack or risk it being confiscated by school staff then pay a 'ransom' fee to get it returned.
I'm sure you've seen, or even attempted, the Mentos/Coke exploding experiment before, but I'm pretty sure you haven't tried it the way this guy does! This exciting demonstration that had me laughing so hard also had one of my co-workers in an office next door ask, "What are you laughing at?"