Harry Potter and the Chamber of Secrets
Harry couldn't take anymore. Clearing his throat loudly, he stepped out from behind the bookshelves. If he hadn't been feeling so angry, he would have found the sight that greeted him funny: Every one of the Hufflepuffs looked as though they had been Petrified by the sight of him, and the color was draining out of Ernie's face.
"Hello," said harry. "I'm looking for Justin Finch-Fletchley."
The Hufflepuffs' worst fears had clearly been confirmed. They all looked fearfully at Ernie. (11.143-145)
"My friendly, card-carrying cupids!" beamed Lockhart. "They will be roving around the school today delivering your valentines! And the fun doesn't stop here! I'm sure my colleagues will want to enter into the spirit of the occasion! Why not ask Professor Snape to show you how to whip up a Love Potion! And while you're at it, Professor Flitwick knows more about Entrancing Enchantments than any wizard I've ever met, the sly old dog!"
Professor Flitwick buried his face in his hands. Snape was looking as though the first person to ask him for a Love Potion would be force-fed poison. (13.87-88)
Harry couldn't explain, even to himself, why he didn't just throw Tom Riddle's diary away. The fact was that even though he knew the diary was blank, he kept absentmindedly picking it up and turning the pages, as though it were a story he wanted to finish. And while Harry was sure he had never heard the name T.M. Riddle before, it still seemed to mean something to him, almost as though Riddle was a friend he'd had when he was very small, and had half-forgotten. But this was absurd. He'd never had friends before Hogwarts, Dudley had made sure of that. (13.69)