Wat happen to common knowledge/sense

Out of all the things I've had to explain to people this is the most stupid. Literally had to explain/iterate why I can't ship in a shoe box and dude was like "you know they ship it in a shoe box to you". I told him no they don't ship it in a shoe box and it's a shoe box in a shipping box and dude was like it's still a shoe.

What happen to common sense/knowledge like do you legitimately not know the difference.

😮‍💨