The next day, Astoria walks over to Draco again. She looks exited. "How do you drown a blonde?" she asks.
Draco looks at her. She's got to be kidding, he thinks. He throws her a bone and says, "How?"
She can barely contain herself. "Glue a scratch-and-sniff to the bottom of a pool!" she laughs.
Draco stares at her blankly. "What's a scratch-and-sniff?" he asks.
She stops laughing abruptly. "It's a sticker," she explains. "You scratch it and then you smell it and it smells like something."
"Why would someone want one of those?"
She looked offended. "Because they're cool. Why would you want Chocolate Frog cards?"
"Because if you build the whole collection, it's worth tons," Draco shot back.
"Whatever," Astoria grumbles. She leaves angrily.