You've probably seen the videos of mentos being dropped into two liter bottles of diet soda causing a giant fountain of soda. This video is a little different in that instead of the people shooting the soda up they are shooting the bottle up like a bottle rocket (or trying to anyway). The guy wraps what looks like plastic wrap around a bunch of mentos, sticks that in the two liter bottom, and then tightens the cap on. He then takes the bottom and throws it down onto pavement which I assume breaks the cap and lets the mentos react with the soda. The first one works pretty good and shoots up about thirty feet or so. The next bottle bounces the first time and finally takes off sideways. The last rocket they try duct taping two bottles togather and then throwing them down. As far as I can tell one side didn't burst open so it just spins around, like one of those 'flower' fireworks, shooting diet soda everywhere.