Authors:

If the general attitude of Canadians toward their mighty neighbor to the south could be distilled into a single phrase, that phrase would probably be "Oh, shut up." The Americans talked too much, mainly about themselves. Their torrid love affair with their own history and legend exceeded-painfully-the quasi-British Canadian idea of modesty and self-restraint. ... They were forever busting their buttons in spasms of insufferable yahoo pride or all too publicly agonizing over their crises.

Bruce McCall (1999). “Thin Ice: Coming of Age in Canada”, Vintage
If the general attitude of Canadians toward their mighty neighbor to the south could be distilled into a single phrase, that phrase would probably be Oh, shut up. The Americans talked too much, mainly about themselves.