"Well. You don't." He couldn't think of another insult and his pride was wounded so he merely sat himself up and tried his best to clean off his face. "It was your fault, by the way. You keep acting like it was my fault we're here but it was your fault." Just to be clear. He didn't want to have detention, he had a lot going on and he was already stressed enough. He had death eaters everywhere, his father was in trouble and he was hardcore flunking history.

"You kicked my chair. You did it on purpose." When he entered the room, before Draco sent the stupid note, Harry kicked his chair. And it was an act of war.