[Dean's whole body went rigid for a split second when Sam's tongue touched his cock. His hands grabbed at the pillow above his head, holding on tight to keep from grabbing at Sam. His head shot up, eyes wide and hungry as he looked down, meeting his brother's gaze. He was absolutely powerless to stop the strangled whimper that escaped him.]

Yes. Fucking... God, Sam... yes. [Even fighting to keep still, his hips still shifted just a tiny bit.]