They say good fences make good neighbours, but does our border with the United States qualify as a "good fence"? It's definitely long, but it looks a little wonky.
The video gets into the history of how the border - which Grey calls "the no-touching zone" - was created, the way less-than-ideal maps led to some awkward decisions, why Vancouver Island isn't half-American, and how a couple of islands are still disputed territory to this day.
Although it's pretty easy to draw a straight line on a map, the realities of geography and the limitations of GPS technology in the 19th century made it a lot harder to keep things even in the real world.
That's why our border is actually made up of about 900 different zig-zaggy lines, and it's also responsible for some oddities here and there.
The video's well worth a look.
And if you'd like to learn a little more about the untold history of this country, check out some of our "Something You Might Not Know About Canada" videos.