Vapidity: is that a word?

The morning is not my best time, as most of my tolerance levels are lower earlier in the morning, so I'm not the most pleasant person if someone crosses me. After the spin class, I was waiting in line to use one of the four showers at this spin studio, and it was an exceptionally busy morning. It seemed like many of the people in line knew each other somehow, and they were chatting up a storm. The line had kind of split in two, and as I moved my bag forward, this young woman shot me a look, which I interpreted as "You're butting in line." So since I had some extra time this morning and the line order was ambiguous, I let her and her friend assume the next two places.