1. People from the US calling themselves “American”
Argentines fervently describe everyone in the Americas (North, Central and South) as “Americans.” The first time I encountered the ferocity of this statement was when I was having dinner one night at a fancy parrilla. The previously friendly waitress instantly jumped down my throat when I told her I was from America, saying how insulting it was for me to say that.
Her “cara de culo” (one of my favorite local phrases, literally meaning “ass face,” used to denote any nasty expression on one’s face) took me aback. I asked her what the name was of the country across the river was, and she replied “Uruguay!” I corrected her by saying that it’s actually called the Oriental Republic of Uruguay…so if she thought that it was fine to call that country Uruguay, why was it wrong to call the United States of America, America? She took her cara de culo back to the kitchen. Obviously I didn’t stick around to order coffee and dessert, as she totally would have spit in them.