You mean like, "Damn, you're a chipmunk, NOT a squirrel?" Yeah, more often than I care to think about.
A white friend's three year old, whom I was holding, looked at me very seriously and said, "You're brown. I like that !" Of course, his nine year old sister had to rag on him by saying, "she was brown before, stupid !" I hugged the little one and reassured him he wasn't stupid. ;)
Other than that instance, no.
I've done it as a joke before.
Yeah probably happened