After shaking the soda, there will be a lot of carbon dioxide bubbles attached to the glass wall, which will produce great pressure. In this case, the opening pressure can only be released from a small mouth, so that a large number of soda will be ejected. At this time, as long as you bounce the bottle of bullets with your fingers and release the bubbles upwards, you can safely open the soda.

Why does shaking coke spray:

A large amount of carbon dioxide gas is dissolved in carbonated drinks and beer, and these gases are in equilibrium at rest. When the original balance is broken by external substances or external forces, carbon dioxide gas in drinks will come out, and coke and beer that have been shaken violently can come out with a lot of bubbles. This is the principle.