"Ouch!" Remus cried. "Sirius! What the hell? You just stabbed me with a fork!"
Sirius looked a little bit guilty at what he'd done, but a pleased grin spread across his face. "Yep," he confirmed.
"Why would you do that?" the werewolf asked, annoyed. "That really hurt, you prat."
"To see if werewolves really are allergic to silver," Sirius replied, grinning.
"Well I'm not, and I would have told you if you'd asked me," retorted Remus.
"But Moony, you yelped. Clearly you are allergic to silver." Sirius looked pleased with his discovery.
"Sirius, you stabbed me. Of course I yelped."