You know the little pocket within a pocket that most jeans have, in this future year of 2023? It's for a _pocket watch_, originally. Fashion tends to lead to vestigial details hanging around more or less indefinitely.
Funnily enough I've always heard that referred to as a "coin pocket", but since I live in a country that has barely used cash for the last 10+ years I thought this was very anachronistic and started putting my keys in there.
