Several years ago, there was a dish box at a regular delivery point that had a note "call me when UPS guy gets here" and the return label scotch taped to it. The regular lady paged the person with the box and I said, "Don't bother, she is going to say, 'I was not sure what to do with the label.'"
She looked at me and said, "There is no way she is that stupid."
Me, "I guarantee it."
The woman came in and said, "I wasn't sure what to do with the label."
The secretary started laughing and I said, "For those that missed the sticker section in kindergarten, you peel it off and stick it to the box, preferably covering the old label." and I crumpled up the backer and threw it away.
3 days later, the secretary told me that I had to talk to the Dish shipper. She asked, "Remember that box the other day?? I need a receipt for that."
"Oh, yeah, about that. It was attached to the backer that I threw away after I put the label on the box." and I shrugged.
My absolute most irritating pet peeve is people that do not know how to put a label on a box. If you are not smart enough to do it, you do not get to keep a receipt.