For those who don't know, I work part-time at a teacher store. The store closed tonight at 5. At about 4:50 we started getting a ton of customers coming in the store. I was checking some people out and they commented that it was getting busy, and I said, "Must be the 4:50 rush!" I said it in a happy, up-beat voice (not annoyed or angry or anything). Well, a customer was checking out around 4:58 and she said, "I came in right before you closed, knew what I wanted, and was out before the store closed. I don't appreciate the comment you directed at me when I walked in!" I didn't really hear everything she said. I just heard "appreciate," so I said, "No problem!" with a smile. She was already heading out the door and turned around and YELLED, "NO PROBLEM?!! I said I DIDN'T appreciate it!!!" and she stormed out. It took me about 3 minutes to even realize what comment she might have been referring to, and the one I mentioned above is the only one I could possibly think of. I'm so confused by the entire situation, because I a) wasn't directing the comment at her, b) wasn't even being rude with the comment. I could have said, "Must be that 1:00 rush!" What's the big deal?! It really upset me...I emailed my boss immediately and told him about the situation, just in case she calls to complain. She was either having a really bad day, or is the type of person who is always angry at the world.