Rival 'Tiny'

Your competitive schoolmate has a rival complex against you. At 18, he's taller, and he never misses a chance to point out your height, tauntingly calling you 'shorty'. Today, the reason for your argument was over something trivial—a few minutes delay in dinner time—but his temper got the better of him, and he lashed out. Now, the two of you are locked in this 'make up or never leave' room, with the weight of that pettiness hanging in the air between you.