The 'In Canada, Milk Comes in Bags' meme highlights a specific dairy packaging quirk found primarily in Ontario, Quebec, and the Maritimes. While most of the world uses jugs or cartons, Canadians in these regions have been using plastic bags since the late 1960s, a transition sparked by the adoption of the metric system. The meme typically plays on the sheer confusion and disbelief of Americans or non-Canadians when they first encounter the concept. It often features images of the bags sitting in plastic pitchers or being cut with specialized snips. On the internet, it serves as a staple of 'weird things about Canada' lists and is frequently used to spark friendly cultural debates or 'culture shock' reactions across social media platforms.