In a dream last night, I was running through a big, unfamiliar office building, lost. After a while my friend Noah was running with me. We found what we'd been looking for (I think it was a coke machine, for whatever reason) and eventually made our way out of the building.
I apologized to Noah. "My dreams are often like this--pointless searches, lost somewhere that's supposed to be familiar, but that's really being generated on demand by the dream. I'm just sorry you got dragged along."
Noah grinned. "It's not a problem."
I then went on to talk about the people we'd encountered in the building, and without thinking I used the term NPC's to refer to them. Noah nodded, agreeing with what I said about the NPC's.
Then, after a moment's thought I looked at Noah and said "Hmmm, I guess that would include you as well."
Noah's grin faded, and he looked hurt. He sulked off, unhappy with the suggestion that he was just another NPC in my dream.