The Day Lupin Kept Talking In An American Accent And Couldn't Help It

"So, what're we going to discuss today?" Lupin asked McGonagall, who was sitting next to him. She made a strange moment and looked at him, he mouth open.

"What's wrong?" Lupin asked. Everyone suddenly went silent and looked round at him. "What?" he repeated.

"You - you," Sprout mumbled, her eyes large and round. "You - you - you."

"I think she means to say we are all somewhat surprised by the way you speak today," Snape translated his colleague, who flushed slightly.

"What? What's wrong then?" Lupin asked, about as puzzled as his colleagues looked. "I don't hear anything strange."

"I think I know what's wrong," said Dumbledore, stroking his beard and gazing gently at Lupin.

"But what?" demanded Lupin. "Would you care to tell me what in the world's wrong?"

Snape raised an eyebrow. "I think I understand it, too, Headmaster," he said softly.

"Yes, yes," said Dumbledore, not looking away from Lupin.

"But WHAT IS IT?" Lupin asked desperately. "I still don't get it!"

"I believe you have been influenced by that little Dutch friend of yours," Snape explained. "You know, the one with the funny trousers."

"But - " said Lupin, but Dumbledore said, "He speaks with an American accent, am I right?"

"Yeah," said Lupin, still puzzled. "What's that got to do with it?"

Snape and Dumbledore blinked at him, then Snape slowly said, "Lupin, YOU speak with an American accent, now, too."

Lupin remained silent throughout the rest of the teachers' meeting.