Quote from : Harry Potter and the Prisoner of Azkaban Movie

Professor Lupin: What frightens you most in the world?
Neville Longbottom: [mumbling] Pfsr Snpe.
Professor Lupin: I'm sorry?
Neville Longbottom: Professor Snape.
[laughter]
Professor Lupin: Professor Sna- yes, he frightens all.