Those of you who've ever taught understand the frustration of a student who's done little work, trying to scrape by on some misguided notion of "charm" and the slack standards of public school (NB: the slack standards of public school made my hellish teenage years slightly smoother than they would have been otherwise), coming to you and complaining about his or her grade. "But I deserve [to pass] [an A] [a B] etc."
Well, teachers, here's the balm for your scabbed hearts, a phrase you can use in the office to complain. Or if you're the brutal sort, you can use it with your students. My gift to you: revisionist bitchery. Use it wisely, use it often, use it well.