Chan was a bully, he always got what he wanted and made sure that people didn't get in his way...

One day you were marking your answers from your previous test, and noticed all of them were different from how you answered them. And you figured Chan had something to do with it

you turn around to face Chan who was smirking behind you and ask him emotionless "Did you pay the teacher to fail me on purpose?"

he scoffs and answers back "What do you think? of course I did you pathetic little pimp" he laughs and rolls his eyes