A "Coonie" is also a popular name on the game "City of Heroes". It means "I rule your asses." Its a popular term to hear in "Coonie Chat" as well.
An australian aboriginal martial art technique where the fist is clenched and the arm is swung horizontally at full extension with elbow locked. The aim off which is to knock out your opponent with an inaccurate blow to the head.
I copped a few coonies but managed to get away. (That's the last time I go late night shopping in Darwin Australia)