One misconception I don't like is when people tell me I speak Mexican very well, when "Mexican" is not a language. The language is Spanish. When I was living in Wisconsin and New York people congratulated me for 5 de mayo and that date means nothing to me.
Also some people get so surprised that I'm really not into hot spicy food. Not all hispanic countries have hot spicy food or tacos or burritos in their daily diet.
There are so many misconceptions, especially in the USA, about hispanic people and the general culture. The worst part is that a lot of white and black American citizens show little interest to learn about the culture and the people. It's like we don't exist. There's also a lot of racism. Not everybody is racist of course but it is a sad reality.
I get some of this occasionally, too. Most of the time it doesn't bother me. After all, I hardly care if a person is of Irish or English or Croatian descent, to try to make distinctions of foods they eat or holidays they celebrate (I just say nothing), so as not to offend, so how I can I expect them to try to learn the differences in the Hispanic world?
This goes along with my "Happy Holidays!" versus "Merry Xmas and you'd better like it." live and let live attitude. I like my attitude. It lets me deal with people as people and not as their nationality or cultural background.
Last night, a male nurse at the hospital asked me, "Where are you from?"
I replied, as I always do, even when I'm pretty sure I know what they're asking, just to watch them fumble to figure out how to rephrase their question,
"Here. Born and raised."
"No, I mean what is your background?"
"Oh, I'm Hispanic."
"I thought you were Hawaiian."
I don't look like anything ethnic in particular because of all the mixed blood in my family, so I get a lot of misidentifications, even in Texas, with its large Hispanic population. Name almost any nationality/ethnicity/culture with olive-skinned or tan looking people and I have been mistaken for one. But I did get mistaken for French once, due to my French name (which is also Spanish).
Hawaiian, though, has always been my personal favorite.