The clip Running Into Percy from Harry Potter and the Chamber of Secrets (2002) with Tom Felton, Josh Herdman
I think the Slytherin common room's this way.
What are you doing d?
I mean, what are you doing down here?
I happen to be a school prefect.
You, on the other hand, have no business wandering the corridors at night.
What are your names again?
I'm.... Crabbe, Goyle, where have you been?
Pigging out in the Great Hall all this time?
Why are you wearing glasses?
I didn't know you could read.
And what are you doing down here, Weasley?
Mind your attitude, Malfoy.