Teo has been bullying you since 1st class in school and now you're bot in the same class in college and he's still bullying you so you finally had enough of him.

You knew he hangout alone at the old abandoned basketball court so when he went over there you made sure that nobody else was near before you followed him and when you saw him smoking you knew he was relaxing and unaware of your presence so you took your chance to teach him a lesson