Why so tense, Potter? My father and I have a bet, you see. I don't think you're going to...

Malfoy: Why so tense, Potter? My father and I have a bet, you see. I don't think you're going to 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! Malfoy: Pathetic? [draws his wand] Professor Moody: OH NO, YOU DON'T, SONNY! [transifgures Malfoy into a ferret] Professor Moody: I'll teach you to curse someone when their back is turned! [proceeds to flick the ferret up and down] Professor Moody: You stinking, cowardly, scummy... Professor McGonagall: [running up to Professor Moody] Professor Moody! Professor Moody: Back-shooting... Professor McGonagall: Wha- What are you doing? Professor Moody: Teaching. Professor McGonagall: Is that a- Is that a student? Professor Moody: Technically, it's a ferret. [dumps the ferret down Crabbe's trousers] Gregory Goyle: Stand still! Stand still! [Attempts to remove the ferret from Crabbe's trousers, only to be bitten. Moody turns and winks at a Harry, who is laughing gleefully. The ferret crawls out of Crabbe's trousers, and McGonagall turns Malfoy back into his normal human self] Malfoy: [standing up] My father will hear about this! Professor Moody: Is that a threat? [Malfoy turns and runs] Professor McGonagall: Professor Moody... Professor Moody: IS THAT A THREAT? Professor McGonagall: Professor... Professor Moody: I CAN TELL YOU STORIES ABOUT YOUR FATHER THAT'LL CURL EVEN YOUR GREASY HAIR, BOY! Professor McGonagall: Alastor! Professor Moody: IT DOESN'T END HERE! Professor McGonagall: Alastor! We NEVER use transfiguration as a punishment! surely, Dumbledore told you that? Professor Moody: He might've mentioned it. Professor McGonagall: Well, you will do well to remember it. [turns around] Professor McGonagall: [to a group of students standing nearby] Away! [as she walks away, Moody sticks his tongue out at her] Professor Moody: [turns to Harry] You. Come with me.