The muffled voice was tentative, hesitant and it was a while before the answer, no, not an answer but another question came.
"What is it, Snape?"
"Have you ever, ehm, have you ever wondered /why/ exactly you were sorted into Slytherin?"
Lucius remembered jeering Mudblood comments, cowering house elves and a heavy leather belt his father had hung in the corner of his bedroom.
He lifted the covers and saw Snape looking up at him, his mouth tantalizingly close to his erection.
"No, of course not," was the inescapable answer. "And Snape, no more questions now till I'm done."