Perhaps it’s the scientist in me, or maybe it’s the fact that I work with people who speak English as a second language, but this phrase is annoying and demonstrates how lazy we have become with communication.
Imagine, if you will, if we substituted other representative phrases . . . it could get ugly.
To be clear, I'm OK with failing a test because I don’t know the material. But when questions are "less than clear," it gets a little disheartening.