The number of the beef.
I used to work at a place where a lot of little old ladies shopped, and it was in the South. There were a surprising number of combinations of items that would come up to $13.34, and if they paid with a twenty, I would always say, "AND YOUR CHANGE IS SIX SIX SIIIIIXXX," which prompted many of them to buy another item to avoid going to hell or whatever.