Sirius felt cold right down to his marrow. This man, this thing, was staring right inside of him, and Sirius knew it could see all of his secret thoughts and terrors. He couldn't stop shaking, and even the pain of encounter with Malfoy paled when placed against those cool, serpentine eyes.
"N,No." He strove for defiance, straightening up as best he could. "And I d-don't g-give a shit."