After doing an exam with dubious answers, the teacher gave us the answers with our exams scores.

One question could have two answers and mine was one of them and was "wrong" so I asked the teacher:

Me: hey, this one is right too isn't it?

He: yeah, but the right answer is the other one.

Me: OK... So shouldn't it be reviewed, nulled or given points to both?

He: no, because the answer is this one.

Me: care to explain how you have two right answers but this one is the "right" one?

He: yes, because its "righter".

Me inside: FUCK OFF AND DIE YOU PIECE OF SHIT!!!!

Me: you got to be kidding right?

He: no. Its this one.

So I changed course and never had to deal with that piece of shit again.