He’d been crossing the atrium, still half asleep and minding his own business when- "Potter!" The unexpected shout made him jump and turn in alarm, straight into a witch rushing passed. She hurried onwards, barely pausing to wave a hand to accept his apology. While she wasn’t any worse for wear for the encounter, Harry’s coffee definitely was. He stared down in disappointment at the mess his drink had made of the floor and the bottom of his trousers. He sighed before scourgifying the mess away and turning his attention to whoever had ruined his morning.