"Morning, Harry," Hermione greeted him vaguely as she sat down, reaching over to spoon some scrambled eggs onto her plate. "You have a lot of Nargles in your hair today; did something happen?"
"Nargles don't exist," Luna said testily as she joined them at the Gryffindor table, grabbing a slice of toast and buttering it.
"I can make you a butterbeer cork necklace if you want," Hermione said dreamily to Harry as she poured herself some pumpkin juice. "It'll keep the Nargles away," she explained before sipping at her goblet.
"Don't listen to her, Harry," Luna said loudly, scowling at Hermione from across the table. By now nearly the entire Great Hall was quiet, watching this absurd spectacle as it happened. Had Luna and Hermione somehow switched bodies? A failed potion perhaps?
"Um..." Harry said weakly. "I think I'm done eating; I'll see you later, okay?"
"Be careful, there's a Crumple-Horned Snorkack on the second floor," Hermione said absently, waving her fork at him as he hightailed it out of the Great Hall. Silence descended over the room as the two girls locked eyes.
Suddenly Hermione burst out laughing. "Oh, that was priceless," she said, wiping a tear from her eye. Luna smiled dreamily at her.
"Are you going to drink that pumpkin juice? I know you don't like it."
"No, go ahead," Hermione said, and Luna reached across the table, taking the goblet from her and placing the buttered slice of toast on Hermione's plate. "Ah, thanks!" Hermione said, picking up the toast and scooping some eggs onto her fork.
"Anytime," Luna said happily, pulling out the Quibbler from inside her robes and turning it upside down. The rest of the hall slowly turned back to their own breakfasts, wondering what had just happened.