An elderly lady sat down at my restaurant table a few days ago. She was obviously suffering from some sort o fdementia -- probably Alzheimer's disease. Her family had to explain to her that that wasn't her table, and pointed to the table they were occupying. At that point, she started to gather up my stuff and move. This one woman (her daughter, perhaps) gently took the things out of her hands and said "That's not ours," and placed them back on my table.
She also had a few embarassing emotional outbursts in the restaurant. Hoo boy.
I felt so bad for the family. They were obviously trying to be patient, as they should. After all, it wasn't that old lady's fault that her mind wasn't working the way that it should. I really, really felt for all of them.