I’m in line paying for my lunch. The bill is $4.80 and I hand the clerk a $20 - she hands me three $5s and the 20 cents but I can see a $10 bill in the til. In the past I have asked if she could give me the ten rather than the two fives and her answer: “It’s my last one.” So who is she saving that ten-spot for?
I’ve seen this so many times I can’t count them all. When I worked retail I even did it myself and I can’t explain it.