UK went a little crazy sometime after the American colonies split. I mean, the US screwed up their fluid ounce / weight ounce so that a US fluid oz of water do

UK went a little crazy sometime after the American colonies split. I mean, the US screwed up their fluid ounce / weight ounce so that a US fluid oz of water doesn't quite weight a US oz, but the UK redefined a hundredweight as 112 lbs to make it an even number of stones, and even though they kept their ounces correct, they redefined a pint to 20 ounces so now there's nowhere in the world a pint's a pound.