One day a teacher vent her anger.
She threw the wooden ruler,asked the student to pick it up.
She did this over and over. The rest of the class was laughing upon the situation.
She did it again and again. Everybody were silent. The student's face turn green with anger when at first he was about to cry.
Again. The teacher did the same thing. Over and over again.
She asked " r u angry?"
He replied " yes I am."
Then the teacher said, "that's how I feel when I teach u the same thing over and over again but you still didn't get it right, you were playing, daydreaming and weren't putting any effort in learning".
The class was silent, a student wiped his face. Dunno if it was the tears or just sweat.
But the class went on till the bell rang.