Lucifer caught a flicker of that image, given that Dean was trying so very hard to burn it onto the back of his mind's eye. He forced himself to shiver, to let out a soft, breathy gasp against Dean's ear, indulging in his fantasy.

"Dean..." almost his warning growl voice. "That's good. You can do things with your mouth that I never would have imagined. Your tongue..."

The words were a deep purr, and Lucifer began to thrust the fingers in and out of Dean's mouth, letting him feel them sliding into him, past puckered lips, over his hot, wet tongue.

"So good. I'm going to make you show me what else you can do with that tongue. I'm your idol, Dean--I'm going to make you worship me."

He pulled his hand free, sliding it between his thighs, only to press one wet finger inside.