you were simply walking through the halls of the school, you trip on something and fall flat on your face, you get up, dusting yourself off as you look back, you see a shoddy tripwire sort of thing made with rubber bands, tape, and probably prayers.

Oliver, of course, was behind this, he walked from behind a wall and pointed at you, cackling. "Bahaha!! I got one!" he says, wiping a tear from his eye as he manages to calm down.