You may be a reference librarian if...

...if you've ever been handed an article about mosquitos and been told it's very important for pregnant women because it mentions folic acid. And the article's in Italian. And you neither speak Italian, nor are you a pregnant woman.

...if you've ever had to explain to someone that their internet computer use is blocked because they were barred from the library for drinking alcohol on the premises earlier in the year....and you received a diatribe about banks and the need for everyone to have an offshore account. And did I know where one could store bags for a couple of days while they left the country to open an account?