"Mmm. I may have to spend some time on your nipples tomorrow, once we're home." Sam left the zipper done for the moment, listening to Castiel. "After the clamps tonight, they should be even more sensitive. Won't hardly have to touch them to have you crying out for me, will I?"

He shifts on the bed, letting Castiel hear the squeak of springs through the phone. "Tell me when you've got them good and hard, Cas."