LOL! We did that with our family this summer. My mother in law was the difficult one.
She's from Brazil (South American), now "American" in North America.
That resulted in a "what the fuck does the American in African American mean anyway? Does it mean US citizen (annoys a number of our Canadian friends under that circumstance) or the continent? In which case it isn't clear as to North or South American.
Is the African meaning CONTINENT of Africa or the COUNTRY of Africa.
It was quite the cluster-fuck (but fun) conversation.