McGonagall pushed herself abruptly to her feet, "Unfortunately Potter, this meeting is ended," she said curtly, weaving around her desk to her office door. Upon opening it, a firework in the shape of a screeching and roaring dragon immediately burst into the room and had all three of them crying out in alarm and ducking down to the ground as the enormous firework took up nearly the entire room. It collided with the wall behind McGonangall’s desk, bounced off of it, and swept its way back out into the hallway. It was quickly followed by a frantic Umbridge, and a significantly less concerned McGonagall - Harry caught the hint of a grin on her lips before she turned down the corridor and followed Umbridge after the dragon that had so rudely interrupted them.