Draco arched an eyebrow, rather more than mildly disgusted. "They hook it to the side of the bed. Where people can see it," he repeated, the whole concept of these cath-whatsits sounding painful, humiliating, insane, and very Muggle. He didn't tell Hermione that – he had a feeling calling Muggles insane might end up with him being left in a heap in the hallway to piss himself.