Quote Originally Posted by Aaron Rosenthal View Post
Are you sure?
I’m not sure how different truth in advertising laws are in New Mexico vs. Canada, but calling margarine “butter” might be a real no-no almost everywhere.
In NM, the speech of the common citizen does not obey truth-in-advertising laws. I'm referring to the fact that people use the word "butter" to refer to products that are actually margarine. In the display cases of stores the multitude of margarines sold under the brand names such as Smart Spread, Blue Bonnet etc. greatly outnumbers the few offerings of genuine butter.

As to the shape of slabs of butter, it would be easy for people who use margarine to enter the conversation and confuse the issue.