Rubber Duck

Dear Ronald Weasley,

What exactly is the function of a rubber duck?

Sincerely,
New Student Oswin

Dear New Student Oswin,

I think rubber ducks just keep Muggles entertained because they don’t have Quidditch? All Seamus ever talked about was football football, and it was so drab. They’ve got to have something else in that world. I’ll ask Hermione later.

Ron