Noun: Someone who is a hypocrite in the douchiest ways possible.
Adjective: Word used by teenagers to describe hypocritical and/ or unfair teachers.
Student1: Man, I can't believe what a cunt barget our language arts teacher is.
Student2: I know right?
Student1: I mean, we both try just as hard as each other. We'll even have the same arguments and she'll bee totally on board with you but not give a shit about it when I'm talking about it.
When you and a mate become close enough that you can gratuitously call each other a cunt as a joke, and neither of you are offended in the slightest.
Me: Sup my favorite cunt in the world!
Friend: Oh hey, how was your day you daft cunt?
Me: It was long you absolute cunt!
Friend: We don't call each other cunts very often, do we you cunt?
Me: Haha we broke the cunt barrier 2 years ago you colossal cunt :)