"Oh." Draco frowned briefly, trying to find the words to explain a concept he'd figured out in his many sleepless nights. "It means it needs to show a certain picture on the telly, but why, I have no bloody idea." Draco shrugged, then pushed the channel down button until the telly was on 3. Suddenly, the picture in front of him disappeared, and Draco's eyes went wide for a moment.
"What the fuck?" he blurted, staring frantically at Ginny for a moment. "Are you sure this is right? It made the picture go away!"