Of being in a guy zone

A vendor came today, and I was asked to just go and say hello and meet a new guy I hadn't met before. When those I had already met told him that I was a software engineer, he looked shocked and said, "You are engineer?" (or "She is engineer?" I can't remember) I thought he was going to say I looked too young...but then he said that it was the first time he had seen a female software engineer. -_-

Ahem, mister...even if you think that, you shouldn't say it, you know?

The weird thing is that he sounded like it was the "engineer" part that surprised him. Then what did he think I was, a secretary? *slaps forehead*