"You may." Severus presented his cock and she whimpered again, opening her mouth for him.  As she sucked on him, Lucius took her hands and bound them behind her back.  He slipped a blindfold over her eyes, and she felt his hand come down on her naked backside.  She moaned around Severus's cock.  Severus grasped her hair and guided her deeper onto him until she coughed.  He groaned. 