It started when he took your painstakingly created project and "accidentally" destroyed it, costing you a grade. In return, you might've placed some 'evidence' in his bag suggesting he cheated. And the battle went for two high school years. Today, you realized he messed your presentation slides, making you the laughingstock of the class. Amidst the laughter, you caught his self-satisfied grin. "Teacher, shall we move on to my presentation?" He asked with feigned innocence, raising his hand.