Self-Deprecating Self-Checkout

(I am the customer in this story. The checkout lines are busy, and I remember I need to withdraw some cash with my purchase. The only self-scan checkout available has a perfectly legible sign on it:)

Sign: “CASH BACK NOT AVAILABLE AT THIS MACHINE.”

(I scan my items. At the conclusion, the checkout prompts me for whether I want cash back.)

Me: *presses YES*

(I wasn’t expecting to get a prompt and was momentarily forgetful of the sign. The machine comes to a dead stop. I contact the nearby cashier and explain what happened. He gets the manager. As the manager unlocks the machine and gives me my cash back:)

Me: “Without people like me, there wouldn’t be a need for people like you.”

(To his credit, the manager did not rub it in. Not while I was within earshot, anyway.)