(I’ve just finished ringing up a customer.)

Customer: “Oh, and I don’t need a receipt.”

Me: “Alright, here you go. Have a nice day!”

(About 20 minutes later, the customer comes back.)

Customer: “I bought the wrong figure! I need to make an exchange!”

Me: “All refunds and exchanges are done at Customer Service. Good thing I held on to your receipt!”

(I hand him his receipt and he went to Customer Service. He gets his refund, then comes back to my register with a different toy.)

Customer: “Alright, this was what I wanted to buy! Oh, and I don’t need a receipt.”

(This time, I put his receipt in the bag without saying a word.)