I helped a man at the desk today who, after I finished copying his stuff, asked if I'd been working here long. I told him not very, and he asked if today was my first day. I replied that I'd been there for about two months, which is slightly inaccurate as I gave the impression that it was less and later reckoning proves that it's been more.
Anyway, then he asked me if I were a high school student.
I started giggling and informed him that I was the Head of Children's Services. He seemed confused, so I clarified with, "I have a Master's Degree." He seemed a bit abashed but congratulated me and went on his way.
I'm going to love being mistaken for a college student when I'm over 30. ^_-