Digger punch 

One of the worlds most deadliest, feared and hardest punches/hits known worldwide to cause severe or lethal damage causing death. The term was used by Digger's (Australian soldiers) during the WW2 campaign in Papua New Guinea which was proven effective to save bullets.

Save your bullets mate, the Col just throw a "Digger punch" at them instead.

Digger punch by Loose'nutt February 2, 2017