Sam couldn't hold back the stray whimper or groan at the increassing force of those swats, at each sting of pain that traveled through his nerves. You wouldn't have thought it'd feel good in a way, that it would have him twitching against his brother's leg and grinding discreetly when he thought he could get away with it.

"Dean," he groaned at the coolness of the leather against skin taht felt overheated. He bit at his lower lip, looking back over his shoulder a little hazily and tugging a little at those restraints. "Fuck..."