Severus sighed and dipped his quill into the inkwell, preparing to mark another student’s essay. This time it was a dunderheaded third year, one of the first in the pile. Severus prayed that this essay would be better than the last, but he had learnt long ago not to rely on hope. After scanning the essay he marked a giant red T across the page with a sharp stroke. He expected the remainder of this evening to go much the same.
Resigned to his fate, he leaned his head on Harry’s shoulder, feeling the warmth of the boy’s presence against him. The flickering candlelight cast long shadows across the desk, and the familiar scent of old parchment filled the air. He glanced down at the next essay, a scowl formed on his face. It was a carbon copy of the previous one, as if the student thought he wouldn’t notice. Frustration bubbled within him, but he fought to keep it at bay. He shook his head, deciding to save their punishment for another day, though the thought of the impending detentions made him feel no less weary.
Harry wriggled in his lap, clenching around Severus’ cock. He narrowed his eyes while raising an eyebrow.
“I told you to be still,” he stated, voice filled with mild annoyance.
Harry froze.
“Sir, I-I”
“Not even a modicum of self-control, I see. It has only been an hour. This is your first and only chance, do not make me punish you.”
“How much longer?” Harry asked, but there was no reply.
Severus started marking another essay, content in his decision to completely ignore Harry. The next time Severus looked up it seemed as if another half hour or so had gone by. The only reason he looked at Harry was because he made the smallest of noises, and it was then that Severus felt the familiar trickle of piss on his robes.
“I've got to pee. Now," Harry said firmly, moving to get up. His face was beet red, obviously his accident left him embarrassed.
But Severus would not have it, he wasn’t about to let Harry decide when he was done just because he needed to pee. Severus was far too comfortable with his cock being swallowed and kept warm by Harry’s tight hole. He traced the tip of this thumb on the edge of Harry’s hole, teasingly rubbing at it while his cock was still stretching him. Harry elicited a loud moan and it took all of Severus’ willpower to not start roughly thrusting at Harry’s prostate. Harry was squirming now, and it was obvious that had to clamp down on his bladder.
Severus smirked as he wrapped his hand around Harry’s cock and gave it a gentle stroke.
“You’re not going anywhere Mr. Potter. If you need to pee you can do your business right here, on my lap.”
Harry lets out a high pitched whine. It was too embarrassing, but he knows he can’t hold it. Anyways, it's been far too long since Severus last supervised his releases, even if it’s his piss.
With Severus’ steady hold on Harry’s cock, he lets go of his bladder and looks away as yellow piss streams out. Severus however, watched intently as Harry’s pee soaked through his robes and clothes underneath.
There was something that made him feel so powerful with Harry sitting there, warming his cock so nicely, submitting to Severus, giving him power over everything. Even his own bodily functions.
Yes, they would definitely be exploring this further.