Harry Potter: Sir, it's Quiddich tomorrow!
Snape: Then I suggest you take extra care, Potter. Loss of limb will not excuse you.
Hermione Granger: Is that really what my hair looks like from the back?
Sirius Black: Sorry about the bite. I reckon that twinges a bit.
Ron: A bit? A bit? You almost tore my leg off!
Sirius Black: Brilliant, Snape. Once again you've put your keen and penetrating mind to the task and as usual come to the wrong conclusion.
Sirius Black: James suggested I made the change permanent. The tail I can live with, but the fleas...they're murder.
Geroge: Not flashing that clipping about again, are you Ron?
Ron: I haven't shown anyone.
Fred: No, not a soul. Not unless you count Tom.
George: The day maid.
Fred: The night maid.
George: The cook.
Fred: That bloke who couldn't fix the toilet.
George: And that wizard from Belgium.
Ron: Let me get this straight, Sirius Black has escaped from Azkaban to come after you?
Harry: Yeah.
Hermione: But they'll catch Black, won't they? I mean everyone's looking for him.
Ron: Sure. Except no one's ever broken out of Azkaban before and he's a murderous raving lunatic.
Harry: Thanks, Ron.
Answer: This didn't happen in the book. It appears to be done purely for comic effect in the movie, showing Dumbledore's eccentric and quirky nature. He's seemingly oblivious to what he's doing and how it affects Ron.
raywest ★