Shotgunning a beer is a technique used to drink a can or bottle of beer very quickly. It involves puncturing a hole in the bottom of the can or bottle, and then placing one’s thumb over the hole while drinking from the opening at the top. This creates a vacuum that allows the beer to flow out of the hole more quickly.
There are a few different ways to shotgun a beer, but the most common method is to hold the can or bottle upside down and puncture a hole in the bottom with a sharp object, such as a key or a knife. Once the hole is made, place your thumb over the hole and start drinking from the opening at the top. As you drink, the beer will flow out of the hole and into your mouth. It is important to keep your thumb over the hole the entire time you are drinking, or else the beer will spill out.