Things really depends whether you are commenting on teachers is in right sense or wrong sense. Every student has their own view and state of mind, some praise teacher while some do not. Image of teacher is also a big factor which decides the comments of the students for his or her teacher. If teacher is showing good response towards students they will absolutely appreciate his or teacher and if a teacher does not give that response which does not fulfil expectations of students they won’t be appreciated. If students give humorous feedback in his or comments while making joke of his or her teacher in any way, this will be a spirit of good humour for a teacher.