In my experience as a lifelong resident of the Centre Of The Universe (that would be Southern Ontario to non-Canadians), we buy butter by the pound, not by the 454-gram-package - no matter what it says on the wrapper.

Also on the cooking theme, oven temperatures are measured in Fahrenheit and recipe quantities are measured in cups, teaspoons and tablespoons.

For weather, summer temperatures are generally measured in Fahrenheit (because it's just not that impressive to say, "Man, it's 40 degrees out!") but winter temperatures are generally measured in Celsius (because it is impressive to say, "Man, it's minus 20 out!").