Dean whimpered and moaned at every bite. They weren't hard enough to leave marks, but they got his attention. The way the machine was going so fast and hard now was almost too much. Dean knew if they went too much more, he would be approaching his limit.

"I don't know," he panted, head tipped back to let Nathaniel get at his neck all he wanted. He couldn't wait to have the collar there again. Just the thought makes his reviving cock twitch in Nathaniel's hand. "We should find out sometime..."