Lyric discussion by asSTARSfallx 

Cover art for The Tenure Itch lyrics by Pains of Being Pure at Heart, The

Why can't this be about a teacher/student relationship that is also abusive?

There's definitely a teacher thread in here, otherwise words like "he says your thoughts need form", "late night sessions", "lessons", "he makes corrections" wouldn't be necessary. It could be simply a reference to a master (who would be a teacher-like figure in this dominant/submissive relationship). However, I think it implicates an actual teacher because of the title. "Tenure" is what a teacher receives after so many years of teaching at particular place, whereby that teacher is given additional rights and protections against being fired (for more info, see: http://www.wordiq.com/definition/Tenure). I think this all ties in to the overall thread of the song. The girl has been in this relationship so long that she has a hard time breaking away from it, finding a reason to "fire" her lover (the teacher). The lessons are sex, and after each session the girl is twisting to his will even though she knows she should get away. Additionally, I think the line "every night he comes and goes again" means that he gets off and then leaves (possibly because they can't be together due to other issues - so they can only enjoy the sex together). This could be why she wants to get away, because she knows it can never be more. At the same time, he keeps pulling her back into his world. The line "if it isn't right, it isn't him" means that any other attempt at being with someone has left her longing for him. This could also be about a male/male teacher/student dom/sub relationship depending on the persuasion of the lyricist.

I should also clarify that I don't think dom/sub relationships are abusive. I think there is a distinction between abusive & dom/sub. I just was offering the abusive idea to suit some of the commenters' particular opinions. My personal opinion is that it's a permissive dom/sub relationship w/ a teacher, and the girl probably wants out because of guilt or knowledge that she can't be fully satisfied because she can never fully be with her lover.