In the show, How I Met Your Mother, Barney Stinson wins a $50 bet against Marshall that he could run the New York marathon without training.

When he receives the $50 bill he makes a remark on the lines of “They don’t make this in a coin yet?”

I always thought it was a jab on him being rich

But now that I know there’s a $50 coin in Canada. It seems like he is raging on the US for not keeping up with Canada without knowing. Barney rags on Canada often because Robin is from Canada and he portrays “a true US patriot”.

Interesting