When I was in middle school, my father's business partner in Montreal sent his son, who was a year or two younger than me, down to live with us for the summer. Basically, the kid refused to learn English, so his father thought a summer in the states would help.
Every time we introduced him as being from Canada, he would get irate, and scream, "I'm not from Canada! I'm from Quebec!"
After awhile, we started saying he was from Canada just to tick him off.