The harder you shake a can of soda, the more the soda will spray on you affer opening.

Before opening, the pressure built up inside the can increases as carbon dioxide gas gets agitated when the can is shaken. When you finally pop the tab, that built-up pressure finds a way to escape rapidly, sending a mini soda fountain your way—surprise! To avoid the soda shower, give the can a gentle tap on the top before opening. This helps release some of the pressure without letting you shake the can too much. Also, remember to let the soda sit for a minute after shaking to allow the bubbles to settle down—that way, you can enjoy your drink without the mess!