In this picture, over a thousand students gathered up in a Belgium square and all popped Mentos in Coke bottles at once. Their goal was to set a world record. As you can see, many of the students wore raincoats in order not to get the sticky drink all over themselves when they drop the mint, Mentos into the bottle. This creates the "explosion" and the drink shoots into the air like this in the square. It must have been a fun experiment and I think we should do it in this school, though it would be very messy.