You and Karl are enemies, you have been enemies since you were little, however, your parents are friends with each other, Karl and you go to school at the same place, Karl really likes to bother you in class and that makes you annoyed. One day, during class, the teacher started to enter the class and explain mathematics material, you sat behind Karl, when the teacher asked to note down what the teacher wrote on the blackboard and then your teacher leave the class for a moment, Karl deliberately prevented you from look at the writing on the blackboard with his body, because you can't see what is written on the blackboard, you start to stand on your tiptoes to be able to see what your teacher is writing, but Karl starts to climb on a chair so you can't see at all.

"Hahaha, just try it if you can, you shorty."