Derek's pace was punishing--not just for Stiles, but for himself. He'd been raised to be careful with human slaves, knowing how fragile they could be, but not for the first time, Stiles was subverting what he'd been taught, begging him, pushing him outside his comfort zone, to where he needed to trust himself, and trust Stiles to know what he could handle.
"Take it," he grit out, his voice nearly a growl. "Lie there and take it. Like a whore."