He giggles. Dares to giggle while looking you in the eye. And at once, everything about him becomes even more irritating than it was a moment ago.
"Oopsie daisy," he laughs, having no shame, even though he hasn't finished a chapter that was due yesterday.
He is so carefree that you see red every time you look at his face. How can an adult act this way? How can he make you this enraged in mere seconds? Why does he do it, that's the question you ask yourself. How much entertainment is he really getting out of it?
"Ah, my dear..." he drawls once his laughter dies out. "I promise, I promise, I will finish soon. You just.. wait here," he smiles brightly before slamming the slide door of his room shut, leaving you just standing in the living room of his house.