Nickname for Mark 'Chopper' Reed. Real life Aussie crim who chopped off his own ear and had a witty way with words. A pretty cool film was made about him, named "Chopper" Great portrayl of Bogans and westies in there as well.
Eric Bana's Chopper was better than the real Chopper.
Q: We've got to get him to hospital Chopper?
A: Do you think my name is Mark Fuckin Medicare Reed?