Harry Potter and the Prisoner of Azkaban2004

Lupin:
Severus, don't be a fool.

Sirius:
He can't help it Remus, it's habit by now.

Lupin:
Sirius, be quiet.

Sirius:
Be quiet yourself, Remus!

Snape:
Oh listen to you two, quarreling like an old married couple.

Sirius:
Why don't you run along and play with your chemistry set?

Snape:
[puts wand on Sirius' throat] I could do it, you know? But why deny the Dementors, when they're so longing to see you? Do I detect a flicker of fear? Ah yes, a Dementor's Kiss. One can only imagine what that must be like to endure. It's said to be nearly unbearable to witness but I'll do my best!