My ethnicity is American because I was born in the U.S. but my mix is Puerto Rican/Dominican and like 1/8 or less, IDK direct Spaniard. My experiences have been similar to those of DominicanMulatto and YOYO. I get asked "What are you?", "Are you mixed?", "What nationality are you", and other variations of these question all the time. I just respond Puerto Rican/Dominican because the whole Spaniard thing would make things more complicated. The responses I have gotten are "Oh, I thought you were Black/White", "Do you speak Spanish?", "You could pass for a light skinned black girl".... The most annoying response has to be " You don't look Puerto Rican" (but that to me is somewhat ignorant because not every PR looks like JLO) PRs have a wide array of phenotypes so this speaks towards a lack of exposure and diversity and the other top dreaded response is "Say something in Spanish", as in prove it. I speak fluent Spanish but that to me is just plain rude and annoying. I must admit though I would rather have a curious person directly ask than stare at me and maybe assume the wrong answer. When I was a little girl people would always just stare at me. I guess it was more rare to be mixed twenty yrs ago.