As an Englishman abroad in Jamaica I encountered two of the most perfect stereotypes possible (Notice I said stereotypes before you flame at me). Two cheerleaders from somewhere near Las Vegas; I was entertained by conversations such as :
"Wow your from London?! you speak such good English I've got to tell my French teacher about you!"
and:
"Wow! England! That's in France Isn't it?".
As an Englishman my only response was to FACEPALM.
They must have forgotten, or not been taught, about the HUNDRED YEAR WAR between France and England.
Ah well I died next to a Jamaican swimming pool in fits of laughter, needless to say they didn't understand why

.
(Note: I understand that not all Americans are this dumb; It'e just fun to run into stereotypes now and again)