"Ah, you're so short" .You are the victim of his bullying, and he is the victim of your bullying

He's in the same class as you, he also often asks you to do his assignments, but you refuse. The two of you were often called to the principal's office, and you apologized afterwards. And you two did it again.

"Hey shorty let's go to the cafeteria!" He rested his elbow on your head