I'm kind of with you on this one, dude. I'm half Mexican and half Irish, but I have pale skin, brown hair, and a white name, so people always just assume I'm Caucasian. And, when I'm around Mexican people, I don't appear Mexican enough and get looked at as a white person, and of course I feel uncomfortable because of that (in addition to the fact that I'm not yet fluent in the language, though I'm working on it).

So yeah, it's hard to try to come up with something to identify as. I usually just try to avoid the issue.