It’s because our clothes are lying to us:
. . . I immediately went across the street, bought a tailor’s measuring tape, and trudged from shop to shop, trying on various brands’ casual dress pants. It took just two hours to tear my self-esteem to smithereens and raise some serious questions about what I later leaned is called “vanity sizing.”
Your pants have been deceiving you for years. And the lies are compounding:
H/T to Mark Frauenfelder for the link.