Pffft. Like hell he would sod off. Malfoy's tone of voice made it quite clear to Harry that he was annoyed with him being there, and though he had no intention of leaving anyway - he had come out here to fly after all - knowing that just his presence was irritating Malfoy was enough of an incentive for Harry to stay right where he was. Served him right for laying in the middle of the bloody Quidditch pitch anyway, that's not what the bench was for.
"'Course you can," Harry agreed after a brief period of silence. "Just like I can fly here if I want to."
In a gesture that would make Ron proud and Hermione hit him over the head with something, Harry mounted his broom and hovered right beside Malfoy on the bench, just out of arm's reach. "Ya know, you're looking a little pale. More than usual I mean, which would make you practically translucent. I guess being poor doesn't suit you." Yes, he was feeling better already.