Last panel should be the entire US Customary System, which is literally just a rescaling of the SI ("metric" system) units. US Customary is derived directly from SI.
When I was young I lived in Puerto Rico for a few years (1980's). Milk was sold in either one litre cartons or one gallon jugs. Distances in road signs and road markers were in kilometers but speed was in miles per hour. Fuel was sold in litres but fuel usage is in miles per gallon.
The whole world uses both for various things. Even the countries that "officially" use metric. Specific global industries still use imperial. Canadian and British people are perhaps the most famous for combining the two, but most of Europe also mixes things in here and there.
And of course the whole conversation is Euro-centric and ignores the historical use of traditional measurement systems in Africa and Asia, but somehow that never gets brought up.
What are you talking about with the weed? It's sold in pounds, ounces, quarter ounces and "half quarters" which is as ridiculously un-metric as it gets.
not to mention, the imperial system is just the metric system in disguise. An inch is defined as 25.4mm, and not by some universal constant, like a proper measuring system.
Which sports use metric in the US? Gridiron football uses yards, auto racing uses miles, baseball uses feet, etc. The only sports I can think of that use metric are track and swimming, and those aren't as popular outside of Olympics time.
Europeans literally see no irony in throwing shade at Americans for hanging onto their traditional measurement system, while also speaking 27 different languages in the span of a few hundred miles.
Maybe come down off your high horse until you get that situation sorted, eh? >.>
Edit: Oops, I thought it would be safe to make a joke a in a meme thread.