I was a cashier at a well known grocery franchise. It was kind of a slow day, which was rare at this particular store. I rang up this older lady (she'll be lady A) who had maybe 4-5 small items, finished her transaction and handed her her change. She moved to the end of my register to put her change away and look for her car keys. No big deal. The next women had 13 items, all which were bags of chips and some soda. I quickly rang her up, handed her her receipt and sent her on her way, happy there was no line behind her for a minute. Lady A, who was still standing at the end of my register comes up to me and says:
Lady A: Excuse me, but that women who you just rang up had 13 items. This is a 12 items or less line!
Me: Okay, it isn't a big deal. There is no line and she's taken care of.
Lady A: I don't believe you understand, this is a 12 ITEMS OR LESS LINE. And that women had 13 items! You're both wrong!
Me: I'm sorry? I didn't keep you or anyone else waiting, your transaction was complete, so I don't see the big deal.
Lady A: (who is now very angry at me) Well you're wrong! I'm going to the customer service desk about this!
and she stormed off, complained that I took someone with 13 times (after her transaction was over might I add) on the 12 items or less line, suggested I be suspended for not following rules, gave me a dirty look, and left. Both my manager and I laughed. I love retail customers!!