You've got to have a bloody lot of trust in your mate to open your beer by shooting it, while it's in your hand.
You’re trusting your mate to shoot a can around 5 inches high and 3 inches in wide as your fat fingers and palm hold the can. But why?
The first time goes off without a hitch but it's probably not a great idea to try this later in the night.
Dumber than using sharks teeth...