A co-worker needed to open a bag of something and was looking for scissors. I was standing right by the register so I held a pair of scissors up for him.
Me: *waiting for him to take scissors*
Co-worker: *searching frantically for scissors*
Me: Um, I’m holding these up for you.
Co-worker: … Oh. I didn’t know.
Me: Did you think I was just holding these for fun?
Co-worker: I guess. I didn’t know. Thanks.