Jack nipped at the Master's lower lip, chuckling. "Wouldn't do to have that happen, would it?" he murmured, his hand leaving the Master's cock a moment, tugging the shirt loose as he took a small step back, enough to let him drop to his knees, wincing a little when they met the harsh grating.
Looking up, he met the Master's gaze with a devious smile, pulling the trousers and boxers down together, leaving them tangled around the Master's ankles, his hands resting on the railing to either side of the Master's hips.
"Ask me," he said, voice low and commanding, a tone he'd never taken with his Master, never would.