It's hurtful to make fun of your classmates.
Jim was in class when his classmate answered one of the teacher's questions wrong.
Jim wants his classmate to know the answer was wrong.
Jim tells his classmate the right answer and offers to help him after school.
Jim starts to laugh at his classmate and tells him he is stupid for not knowing the answer.
Jim's classmate is grateful to Jim and learns more with his help.
Jim's classmate starts to cry because Jim makes him feel like he his useless.