The context of the following conversation is Kai paid no attention to their teacher, who was covering topics to be included on the exam, as he played games on his phone.:
Kai says The games on my phone distracted me from the class. The teacher was covering topics that were on the exam and I didn't care..
The friend responds When did you become such a horrible student?.
Kai responds The day I discovered gaming..
The friend responds Did your teacher catch you playing games?.
Kai responds Eventually he caught on but it took him a while. I hid my phone underneath my desk..
The friend responds You are such a trickster..