
Originally Posted by
Order of the Phoenix, pg. 458-60, UK Edition
"I am here on Dumbledore's orders," said Snape, whose voice, by contrast, was becoming more and more quietly waspish, "but by all means stay, Black, I know you like to feel ... involved."
"What's that supposed to mean?" said Sirius, letting his chair fall back onto all four legs with a loud bang.
"Merely that I am sure you must feel -- ah -- frustrated by the fact that you can do nothing useful," Snape laid a delicate stress on the word, "for the Order."
It was Sirius's turn to flush. Snape's lip curled in triumph as he turned to Harry.
[...]
"Wait a moment," said Sirius, sitting up straighter in his chair.
Snape turned back to face them, sneering.
"I am in rather a hurry, Black. Unlike you, I do not have unlimited leisure time."
[...]
"I've warned you, Snivellus," said Sirius, his face barely a foot from Snape's, "I don't care if Dumbledore thinks you've reformed, I know better --"
"Oh, but why don't you tell him so?" whispered Snape. "Or are you afraid he might not take very seriously the advice of a man who has been hiding inside his mother's house for six months?"
"Tell me, how is Lucius Malfoy these days? I expect he's delighted his lapdog's working at Hogwarts, isn't he?"
"Speaking of dogs," said Snape softly, "didyou know that Lucius Malfoy recognised you last time you risked a little jaunt outside? Clever idea, Black, getting yourself seen on a safe station platform ... gave you a cast-iron excuse not to leave your hidey-hole in future, didn't it?"
Sirius raised his wand.
"NO!" Harry yelled, vaulting over the table and trying to get in between them. "Sirius, don't!"
"Are you calling me a coward?" roared Sirius, trying to push Harry out of the way, but Harry would not budge.
"Why yes, I suppose I am," said Snape.