There are many nicknames to call someone different that you don’t know. Like dude, dudette, pal, mate, and many others.
Uniquely in Indonesia, the people have its own term to call the foreigners like the international tourists, or even a local tourist ( local bule ).
They call them ‘bule’. Bule, from its literal meaning, actually means ‘albino’. Indonesian used it to call the foreigners especially to the white people.
While this can be seen as an offense like a racist matter, Indonesian people actually do not have ill intention when they call the foreigners that way. It’s just that any person would need to have some way to address another instead of calling others by the word “Hey” or “You there”.
Some foreigners might find this offensive and abusive as the nickname ‘bule’ tends to degrade the foreigners as non human-beings or aliens.
Most sellers in Bali do not address the foreigners as ‘bule’. They just call them ‘mister’, like in “Hey mister, come and buy this!”
Nevertheless the contradiction whether the word ‘bule’ is offensive or not, the foreigners who come to Indonesia actually have the right to call Indonesian people as ‘bule’ too, because to the international tourists, Indonesian people can be regarded as foreign people to them.
(Credits go respectfully to the rightful owner)