The US Army was going to stage War Games but due to budget cuts they had no rifles or pistols for the soldiers to use.
The Captain in charge issued his men sticks and told them this is your rifle, say "Bangity Bang" and your enemy will fall over dead.
He issued them smaller sticks and said these are your knives and pistols, say "Powity Pow" for the pistol and "Knifity Knife" and your enemy will fall over dead as well.
The War Games began and the soldiers rushed into the field, one soldier was skeptical that this strategy would work, so when he saw an enemy soldier he took his long stick and said "Bangity Bang" and the man fell over. So he continued until an enemy knocked the stick out of his hand, he took out his smaller stick and said "Powity Pow" and the man fell over.
His team was winning until he saw a lone soldier walking slowly towards him killing his team mates with ease, he rushed up and said "Powity Pow" but the man did not fall over, he repeated the words to no effect. He yelled to the soldier Hey, didn't you hear what the Captain said, when I say "Powity Pow" you fall over dead! So he said it again to no effect. He asked the soldier why don't you fall over, the enemy soldier replied, "Tankity Tank"