"No holding back," Sam warns Castiel, curling his fingers slightly. Not enough to press against his prostate, but definitely so that the other man could feel the movement of his fingers. He leans in, nuzzling Castiel's cheek. "Your mouth is wonderful. You are wonderful, Cas. Love getting lost in the feel of your body, the way that you react for me. Your eagerness and how you're so good for me."