Harry Potter and the Sorcerer's Stone
"The Chasers throw the Quaffle and put it through the hoops to score," Harry recited. "So – that's sort of like basketball on broomsticks with six hoops, isn't it?"
"What's basketball?" said Wood curiously. (10.40-41)
Ron was fascinated by the fifty pence.
"Weird!" he said, "What a shape! This is money?"
"You can keep it," said Harry, laughing at how pleased Ron was. (12.55-57)
"But there aren't wild dragons in Britain?" said Harry.
"Of course there are," said Ron. "Common Welsh Green and Hebridean Blacks. The Ministry of Magic has a job hushing them up, I can tell you. Our kind have to keep putting spells on Muggles who've spotted them, to make them forget." (14.25-26)