Australian slang.
'Go Crazy'
see 'Going Troppo' for more information.
for examples of usage please see 'going troppo'
NB: the proper/standard usage in common speech is 'going troppo', it is far more common to hear the terms 'go nuts' or 'go crazy' than 'go troppo'.
The practice whereby white people (Expats) adopt local customs and attire, eat solely local food and learn to speak local languages with fluency in the world's tropical regions.
What is that man wearing, I do declare he's going troppo