I am an upright, though occasionally marginalized, Pacific Islander.

When I am asked to indicate my race on an official form, I almost always check Samoan, or if not available, Other Pacific Islander.

If none of these are available, I usually go with Other.

When asked for my position on an official form (the intent being to  determine my occupation), I usually write Upright, though I have used Marginalized in the past as well.

I'd like to say that I'm taking a stand against artificial attempts to codify or classify me, but in truth, I just like being a pest.

An instigator, my mother used to call me. 

And the best thing about these answers is that I have been doing this for years and no one has ever commented on any of my responses.