When one has sex with a teacher/professor in exchange for an A, then finds out on their report card that they were given the B- they deserved in the first place.
I had sex with a professor in exchange for an A, then found out on my report card that I was given the B- I deserved in the first place. I was totally grade raped.
the act of taking off as many points as possible without being obvious of malpractice
frank "god I just got grade raped by my teacher, and after two hours of work I still failed based on spelling mistakes on my math exam"