There is always one teacher who just does not like you for no reason in particular. All the other teachers may have their moments when they don't like you, but this teacher persistently hates you for the whole of your education. And you know that it's not just because they hate everyone- they love the rest of your class.

They ask you questions that they know you can't answer, never praise you when you do well on tests like they do with everyone else, and they tend to ignore you or tell you off for minor things.

In the end, you always have someone to rant about and you have your friends to reassure you that you're not really as annoying as the teacher makes you out to be.