Typically from the Polynesian islands like Tonga, Cook Islands, Fiji, Vanuatu and Samoa an island boy is considered someone who does sexual favours handjobs and blowjobs in exchange for money, favours or protection from Polynesian/Island men.
Homosexuality in these cultures is only seen as gay if
you are the one performing the act. e.g. it is considered a gay act to give another guy head, but not the person themselves. in many cases these men have girl friends and wife's. it's just considered part of their responsibilities to the group or gang.
while it is a sexual grey area to be considered an island boy the same isn't considered for an island man. culturally it isn't seen as gay to receive sex acts off another male.
it's not considered polite to refer to a island boy as gay it isn't typically met with
aggression, but calling an Polynesian/Island man as gay isn't a good idea. Most of these men are gang members/leaders and it has been know that retaliation punishment can consist of gang beatings, being forced to perform oral sex on the offended party and in some cases the offended party will have his
island boys rape them