Why are Australian beer cans so big?

[DoNotFeedTheSneed]

Is it to make their national sport, throwing beer cans at the cars driving behind them so they crash, easier?

 

[Poppavalyim Andropoff]

while no one in Australia drinks that fosters shit the big cans are so you can share it with whatever wild animal you just wrestled in combat

 

[Le b0wski]

When pouring a drink upside down some will spill so they make the cans bigger.