Many people like it when others assume that they are younger than they really look. I used to like it, too, until now--especially when I work in a high school.
Two days ago, the cafeteria women thought I was a student. While most people would find that flattering, I found it really upsetting. Why? Because they scolded me like I was a student. One woman kept telling me to slide my lunch chard through the scanner when I gave her a five-dollar bill. Another woman angrily told me to get back in the original line where I came from.
I hate being treated like a child, and I especially don't like being mistaken for a teenager. It really sucks.