"Don't be jealous," he murmured in Jen's ear, reaching around her to take her pert breasts in his hand and roll his thumbs over her nipples. Jen squirmed a little, but in her position there was nothing she could do to get away; her nipples were erect from the cold air down here, and little shocks ran through them as he tugged at them until they were hard as pebbles. Then he reached forward and took two the clamps dangling on chains from the central pole. Jen could do nothing but bite her gag as he carefully tightened them onto her sensitive nipples. Amber got the same treatment, of course,...