Kind of off-topic, but I've always thought a good way to suss out what sort of background somebody comes from is to ask them to visualise $1million dollars.

People from a "working class" background tend to see a massive pile of money, more middle class, a smaller pile, upper class maybe a cheque or a small stack of $100 bills or a bank transfer.

It's maybe one of the weirdest parts of the JBR ransom note (getting really off-topic now), "$118,000 dollars be placed into an "adequately sized attaché" consisting of $100,000 in $100 dollar bills and $18,000 in $20 dollar bills."

That would take up a really small amount of space, but if you're never seen that amount of money you might not know that (especially in 1996, pre-internet)