There is another store, which shall go unnamed, where I occasionally go for tshirts. Their sales are somewhat confusing for me, being an infrequent customer. Prices on the items, though marked down, might be further discounted upon checkout, always a pleasant surprise.

My purchases came to $19.19. Sometimes I will give the change, most times not, as it seems to befuddle some clerks, who might be embarrassed to call for help, and wind up giving me additional change and a few bills back. In this case, I gave the clerk a $20 bill. She gave me back a penny, thanked me, and went back to her folding.

Me: (getting out glasses to check receipt) Uh, how much did you say it was?
Clerk: Is there a problem?
Me: Yes, I think you owe me change.
Clerk: I gave you back your change, ma’m.
Me: (indicating receipt) Silent, holding out hand
Clerk: Oh, uh, right. You know, these cash registers, they tell us how much change to give the customer. Uh, well. Here. I guess I just saw the 1 there on the register.