I thought it sounded a bit like Percy singing... maybe you've got to attack him while he's in the shower, Harry.
J. K. RowlingNo, thanks," said Harry. "The toilet's never had anything as horrible as your head down itโ it might be sick." Then he ran, before Dudley could work out what he'd said.
J. K. RowlingWhich way did they go, Peeves?" Filch was saying. "Quick, tell me." "Say 'please.'" "Don't mess with me, Peeves, now where did they go?" "Shan't say nothing if you don't say please," said Peeves in his annoying singsong voice. "All right- PLEASE." "NOTHING! Ha haaa! Told you I wouldn't say nothing if you didn't say please! Ha ha! Haaaaaa!" And they heard the sound of Peeves whooshing away and Filch cursing in rage.
J. K. Rowling