How do you make a loud bang with a juice carton?

To create a loud bang with a juice carton, you can fill the carton partially with water and then tightly seal it. Next, shake it vigorously to build pressure, then quickly puncture the carton with a sharp object, like a knife or a scissors. The sudden release of pressure will create a loud popping sound. Always exercise caution and ensure you're in a safe environment when attempting this.