Anal punishment from the head of department

He could have talked to me normally, I'm not averse to sex, I'd even let him fuck me in the butt, but this way? That's going too far, he can't do what he wants, that's not how I imagined it, who does he think I am? Firstly, I'm not a slut and secondly, I'd rather not write this here, anyway, I finished the internship early.