Per Tony Hwang:
Japanese old saying, "If you laugh at penny, some day you'll cry for penny"

I call it "Respect for money".

I'll bend over to pick up a penny on the street - just out of respect.

Didn't know I had it until I saw this guy throw a hand full of pennies
at some pigeons in the city and had a serious "WTF ???" moment.
--
Pete Cresswell