When nearly every event's name start with "World"

World Series, World Convention, and so on .....

Hey people !! There is a whole world outside USA !!!!

And by the way, why do you call yourselfs "Americans" ? Your certainly not the only ones. You are "Unitedstaters" as there are Canadians (who lives in America too), and Mexicans, and Cubans, and Brazilians, and Argentinians, and Uruguayans and many more.

You know that you are in the USA when everyone you ask thinks they are the center of the universe