“
Professor Slughorn,” wheezed Filch, his jowls aquiver and the maniacal light of mischief-detection in his bulging eyes, “I discovered this boy lurking in an upstairs corridor. He claims to have been invited to your party and to have been delayed in setting out. Did you issue him with an invitation?” Malfoy pulled himself free of Filch’s grip, looking furious. “All right, I wasn’t invited!” he said angrily. “I was trying to gate-crash, happy?” “No, I’m not!” said Filch, a statement at complete odds with the glee on his face. “You’re in trouble, you are! Didn’t the headmaster say that nighttime prowling’s out, unless you’ve got permission, didn’t he, eh?” “That’s all right, Argus, that’s all right,” said Slughorn, waving a hand. “It’s Christmas, and it’s not a crime to want to come to a party. Just this once, we’ll forget any punishment; you may stay, Draco.
”
”
J.K. Rowling (Harry Potter and the Half-Blood Prince (Harry Potter, #6))