Canadians can easily ’pass for American’ as long as we don’t accidentally use metric measurements or apologize when hit by a car.

Coupland’s joke turns on the cultural closeness of Canada and the United States: Canadians can blend in because language, media, and consumer life overlap heavily. The punchline hinges on two stereotypical “tells”—Canada’s use of the metric system and a national reputation for reflexive politeness (“apologize when hit by a car”). By exaggerating these markers, the line satirizes how national identity is often reduced to small habits and clichés, while also hinting at a quieter anxiety about being mistaken for (or absorbed into) American identity. The humor works because it is both affectionate and slightly defensive, using self-mockery to assert difference.