Ron's back stiffed and he found his jaw tightening; he wasn't sure it had been the best idea to walk by Malfoy's table now. As soon as that voice left the other man's mouth, Ron felt himself grimace internally. What the bloody hell did you think was going to happen, you daft prick, he thought to himself. He barely took a breath before the words shot out of his mouth, the tone dripping with attitude, "Yeah, Malfoy, they keep us Aurors training and locked in a dungeon most days. Oh wait, that was at your manor, wasn't it?"
He thought he felt a jab, and turned to catch a look of Ginny's face, and he blanched and flinched. But he didn't know how to get out of the mess he had initiated. He thought if they just marched right by him, Draco would end up with the upper hand. It was annoying, but he felt like he'd lose more face just turning and walking away.
He was ready to say something more, but stopped himself in the nick of time.