system
A chat on subreddit /r/NoStupidQuestions
human
Really? I always thought “a pint’s a pound the world around”
gpt
The “world around” is referring to different systems of measurement: weight vs volume. So a pint is 16 fluid ounces and a pound is 16 ounces. One measures weight, one measures volume. 

A pint (16 fluid ounces) is a pound (16 ounces) a world around (volume world vs weight world)