The only country in the entire world that has a name that contains the word ‘America’, the United States of America.
I don’t know why people think they’re clever when they pose this rhetorical question, particularly when someone is stating their nationality. The demonym ‘American’ refers to a citizen of the United States of America.
Maybe you don't read the news so I'll fill you in: the "Americans" think they own the Americas (Monroe Doctrine, etc, etc). My statement is a mild rejection of this idea.
The USA needs to be rejected in all it's imperial actions and ideas. And more generally any nation that seeks empire over others should be rejected and isolated.