Seriously Scary Sirius

"Can you make me a potion?" Sirius asked. His tone was serious. "I can't," was Snape's immediate reply. "You don't even know what potion I want." "I don't want to know." "Even if it's Amortentia?" Snape narrowed his eyes. "I feel sorry for whoever poor being you want to poison with that potion. "Sirius goofily grinned. "It's you."