Title: Grades

Pairing: Dean/Castiel

Prompt: Sub!Dean in a cockcage during a lecture by Professor Novak, squirming in his seat till Cas finally dismisses class.

Notes: Unbeta'd. If you would like to request a prompt of your own my tumblr page is linked on my profile, or you can contact me here.

Squirming around one more time in his seat Dean had to resist the temptation to fondle his crotch again. Castiel – or Professor Novak in class – had put a cockcage on him this morning and told him to get to class.

They both knew that relationships between students and teachers were forbidden, never mind one of this nature, but that was part of the thrill.

"That's all for today class." Dean's head snapped up, trying in vain to act like his mind wasn't just on this morning. From Castiel smile as he meet his eyes, he wasn't doing very well. "Make sure to hand that assignment in next Tuesday. Oh, and Dean, could you please stay after class? I have something I'd like to discuss with you."

Castiel gave him a lewd smirk as Dean's face flushed red and he shifted slightly in his seat. Several students glanced his way as they packed up, shoving pens and laptops in bags as fast as they could.

Finally, after several torturous minutes of students filing out, the door to the building slammed shut with an audible 'clang'.

Swallowing nervously Dean made his way over to Castiel's desk. He stood for a moment waiting to see if Cas would address him first. Clearing his throat quickly, he shuffled closer.

Castiel's eyes finally lifted from his paper, running approvingly over Dean – stopping only momentarily at his crotch. "I saw you squirming," Cas says in greeting. "Is there something wrong?"

Castiel's face was once again painted in a smirk.

Dean's mouth ran dry and he shakes his head softly. "No, Sir, there isn't anything wrong."

"Oh, but I beg to differ." Castiel gestured towards the papers sitting in front of his desk. "It seems to me that you almost failed one of my most recent quizzes. Care to tell me why?"

He remembered the quiz. He had been so bone tired after working his shift at the Roadhouse that he had just fallen into bed. He had meant to study – he really did – but it kind of took the back burner. He could vaguely recall stumbling in several minutes late to class and prompts filling out some answers before falling asleep at his desk.

"I – I'm sorry, Professor Novak, I had a late night and – "

"That does not excuse your grade Mr. Winchester."

Swallowing nervously, Dean's eyes darted to the floor, then to the door before settling back on Castiel. "I know Sir."

Castiel stood up behind his desk, walking deliberately slow around Dean until he was behind him. "Pants off," his voice strong and echoing in the room.

Dena rushed to comply, slipping off his boots and yanking his pants down his legs. As he stepped out of them the cockcage made its self know when his dick tried in vain to get up.

"Over the desk ass in the air. I'm going to spank you for every single question you got wrong."

Dean nodding, breath catching in his throat. He spread his legs apart, folded arms bracing against the desk.

The first smack was light, almost playful. The second came moments after, much harder and the smack reverberating in the room. After that it was a flurry of pain and pleasure and sound until finally it topped.

Dean let out a chocked sob, tears staining some of the papers below. He felt hands rub softly over his cheeks, applying some form of cooling liquid.

"So good, Dean." He heard Castiel say, hands caressing his lower back. Castiel pulled Dean up from the desk, a hand threading through his hair as he kissed him softly.

Dean thrust his groin next to Castiel's own arousal, whimpering. "Cas, can you please let me come. I need to come." His voice was completely wrecked.

Castiel pulled back from where he was showering Dean's neck in kisses to give Dean an amused smile.

"Bad boys don't get to come, Mr. Winchester, and I'm afraid it will take more than that to get your grade up."

The grin that Castiel was giving him was positively predatory and Dean once more became aware of the cockcage confining his throbbing dick.