Newton's Third Law of Motion
Not quite as quick on the uptake as his namesake Isaac , Matt is having trouble coming to grips with Newton's third law -"For every action there is an equal and opposite reaction " If you bash people, girlfriends,taxi drivers etc etc -the police will arrest you. If you say "F#$k you" to the American Police -they will arrest you . If you carry on like an idiot - the press will report it and it will embarrass your long suffering parents yet again- that sort of thing.
Anyway at least he thinks being Australian counts for something, as do I even if our reputation overseas is continually being trashed by the actions of our "powers that be" .