Ask a Brit, they'll tell you you're full of shit. I lived in the UK for a year and was constantly asked if I was American due to my accent. When I said, with a pained expression, no I'm Canadian, the usual response was invariably, "thank god!" By the way, no one in Canada says "aboot." Furthermore, the sources I posted above are just a sampling of hundreds on the topic of Americans posing as Canadians while abroad. I'll trust the expert at the University of New York over you anyday for starters....and few people are going to say to your face that they think your country has run amok.