Harry Potter and the Goblet of Fire2005

Draco Malfoy:
Why so tense, Potter? My father and I have a bet, you see. I don't think you're gonna last ten minutes in this tournament. He disagrees. He thinks you won't last five! [laughs]

Harry:
[enraged] I don't give a damn what your father thinks, Malfoy! He's vile, and cruel... and you're just pathetic.

Draco:
Pathetic?! [angrily draws his wand]

Crouch (as Mad-Eye):
OH NO, YOU DON'T, SONNY! [Transfigures Draco into a ferret] I'll teach you to curse someone when their back is turned! [Proceeds to flick the ferret up and down] You stinking...cowardly...scummy...back-shooting--

McGonagall:
Professor Moody! Wha-what are you doing?!

Crouch (as Mad-Eye):
Teaching.

McGonagall:
[shocked] Is that a... Is that a student?!

Crouch (as Mad-Eye):
Technically, it's a ferret. [Proceeds to dump the ferret down Crabbe's trousers]

Goyle:
Stand still! Stand still! [Attempts to remove the ferret from Crabbe's trousers, only to be bitten]

[Crouch turns around and winks at Harry, who is laughing gleefully. The ferret crawls out of Crabbe's trousers, and McGonagall turns Draco back into his normal human self]

Draco:
[Getting up] My father will hear about this!

Crouch (as Mad-Eye):
Is that a threat?

[Draco turns and runs]

McGonnagall:
Professor Moody--

Crouch (as Mad-Eye):
IS THAT A THREAT?!

McGonnagall:
Professor--

Crouch (as Mad-Eye):
I CAN TELL YOU STORIES ABOUT YOUR FATHER THAT WILL CURL EVEN YOUR GREASY HAIR, BOY!

McGonnagall:
Alastor!

Crouch (as Mad-Eye):
IT DOESN'T END HERE!

McGonagall:
Alastor. [Moody listens] We never use Transfiguration as a punishment! Surely, Dumbledore told you that?

Crouch (as Mad-Eye):
He might've mentioned it.

McGonagall:
Well, you will do well to remember it. [She turns around, before gesturing a group of students gathered nearby to leave] Away!

[As McGonagall walks away, Crouch sticks his tongue out at her, behind her back]

Crouch (as Mad-Eye):
You. Come with me.