Something about it made Ron feel intense anger. Without thinking he was up and sent a Continuous Tripping Hex before stalking away. Normally a Tripping Hex would be nothing but a nuisance. But the student had tripped at the perfect moment and slammed his head right on the edge of a table. Then a suit of armour that had stood next to the table fell down on top of his legs. Ron heard a sickening crack and had to stop himself from laughing.