"Yes, I was simply being a smart arse," he said wondering why he needed to explain that to Bill of all people.
"Because I'm a very, very, very smart wizard," Percy replied with a teasing smirk.
"I don't know if that would do it," he scratched his head mocking thoughtfulness. "They could have implanted in their body a way to deliver the polyjuice without needing to drink it. I think there is only one way, Bill. We have to say we don't like her pumpkin pasties." And if Molly didn't kill them right then and there, then they'd know it wasn't Molly. Of course, they'd be dead. His plan needed revising.