Funny thing about $1 bills. Years ago, when FA's took cash for liquor sales, some chuckelhead in steerage would pull out $100 to pay for a $4 beer. Sometimes the FA would come up to the flight deck looking for change for $100. As a FE, I would ask if they thought the pax was looking for free st*t. If the FA was perturbed at the pax's "scamming" behavior, I would reach into my suitcase and pull out a banded package of $1 bills equaling $100. for her $100 bill.
We all got a chuckle at the pax reaction when the FA gave them $96 in change, all in ones.


This was back in the day of fight engineers, $4 beers, people actually used money, and Delta was not cashless. I know.....unimaginable! Right?