Charles dragged me into his room, barely pausing to lock the door. The minute the lock clicked he had me up against the door kissing me roughly. His body was flush against me and I could feel his tell-tale sign of his arousal pressed up against my core. I shuddered as I threw my arms around his neck pouring all the pent up sexual tension that had built up into the kiss.

Without warning Charles ripped open the jacket of my costume causing the poorly sewn buttons to pop off in different directions. With anyone else I might have been miffed but I barely noticed so caught up in the glory of Charles Xavier undressing me. After gazing down at my scantily clad form, Charles picked me up as I wrapped my legs around him and started heading toward the large bed dominating the room.

Placing me down on the bed, he headed directly for taking off the plaid bra that had come with the costume. "Ah, ah, ah, Professor," I chastised, still acting every bit of the school girl my costume made me out to be. "Now it's your turn to take something off," I said as I began agonizingly slowly unbuttoning the buttons of his crisp light blue shirt, kissing each new inch of skin the buttons revealed. Maybe I was a glutton for punishment but I wanted to make Charles experience every second of torture he put me through during my time in school.

After reaching the last button, Charles shrugged his shirt off quickly and flung it carelessly across the room, quite the contrary of the neat, composed headmaster he usually was. Expertly, he undid the clasp of my bra revealing my breasts. I felt self-conscious for just a moment before Charles descended his head sucking on my left nipple. All coherent thought went out the window as I pawed at his back arching upward. Not to feel left out his left hand kept busy pinching and rolling my other nipple, before switching sides.

Impatient, I reached down desperate to find the button of his trousers. Sensing my need he stopped scooting up a bit to allow me easier access. His breath came in hot pants against my neck, increasing my urgency as I quickly opened the button and lowered the fly of his pants before pulling them down all together. Biting my lip, I hesitated playing with them hem of his boxers. It was now or never but I still felt the need to give him an out. If I was going to have Charles Xavier, I wanted him of his own accord. Glancing up, I saw no trace of regret in his eyes and I pulled down his boxers unveiling the part of him I had only dreamed of seeing before.

He was even more impressive than I had imagined. He was certainly sizable but not enough so that I would worry about him being too big. With one final smirk upward I climbed on top of him and shimmied downward taking him in my mouth, twirling my tongue around the head. I was rewarded with a light moan that only served to fuel the fire. Taking him all the way in, I bobbed my head up and down his length, relishing in the sounds I extracted from him. A sharp tug on my hair was all only hint I needed to know what he wanted and I reluctantly pulled away allowing him to take the reins once again.

Charles' warm hands traced lazily down my hips to my skirt. Pulling down the zipper, I lifted my lower half off the bed for him to pull down the skirt much easier. He looked shocked to see no further boundary between him and me.

"You went to the party like this?" he questioned both surprised and aroused. "Anyone could have seen you!"

"I took my chances that you'd be the only one," I said breathlessly, squirming as each breath he let out hit me only increasing my need.

"Well as headmaster, I think that deserves punishment don't you?" he said with a wicked glint in his eyes, getting up from the bed and heading to his drawer.

"And what sort of punishment did you have in mind Professor?" As much as I relished the thought of foreplay with Charles, I was already past that point. I needed him inside me now. Pulling out a ruler from his drawer he brandished it at me.

"Naughty students need to be taught a lesson, Ms. Black," he said still every bit in the act as I had started out. It suddenly hit me; I was living out the school girl/teacher fantasy with my actual headmaster. Deciding not to dwell on how there was surely something fucked up about that I decided to just sit back and enjoy.

"Lay on your stomach," he said still breathing raggedly. I obliged knowing what was coming next but still anticipating with bated breath all the while. I was no stranger to hearing about spanking but having it done was a whole different story. "Still, when in Rome …" I thought.

The ruler fell with a loud crack on my backside. It burned but it wasn't an entirely bad sensation. I moaned lightly to voice my approval before receiving another whack on the backside. I received 5 in total before Charles rubbed my, what was sure to be red, backside reverently. "I think you've learned your lesson," he said to himself before turning me over.

"Now about that treat," he said before heading downward. He ran his tongue along my slit causing me to moan in anticipation. Working his tongue between my folds, I grabbed on to a fistful of his hair, thanking my lucky stars I had shaved in anticipation of this night. His nose brushed against my clit causing me to do a short intake of breath. Having located my clit, he now focused his attention there, alternating lightly flicking with his tongue and sucking on it.

"If you want me to hold out much longer you might want to stop that," I warned in a breathy voice. Immediately Charles removed his head and lined himself up with me. Mirroring my actions from earlier he looked me in the eyes giving me one last chance to back down. As if that would happen. I had waited patiently for this to happen for a while; I wasn't going to give up right where the alarm clock had always cut me off.

I nodded slightly and felt Charles sink into me, filling me to the core. We groaned simultaneously at the feeling. Gradually Charles picked up speed and began thrusting into me without restraint. It was everything I had imagined and more. He seemed to hit just the right spots effortlessly without needing me to guide him. It was nothing like the sloppy, unsure sex I had had in previous flings here at school. Charles was in a league of his own.

"I'm close," he mumbled against the skin of my neck as his thrusts became more erratic. "Please tell me you're close."

"Almost there," I moaned digging my nails into his back. Just a few thrusts later, my body convulsed as I tightened my legs around him. Shaking a few moments, I finally went limp as Charles let go wildly thrusting til he grunted out his own orgasm, collapsing on top of me. We laid there in silence for a moment as reality quickly came hurtling back to us. I had just fucked my professor. I wasn't sure I was ready to face what was sure to be the repercussions of that until morning.

"Jesus Christ," he breathed out, rolling off of me to lie beside me. "I can't say that's how I thought my night would go." He didn't seem angry or upset which were the first emotions I had expected from him. In fact, if the slightly delirious smile on his face was any indication, he seemed fairly happy.

"Do you regret it?" The words were out of my mouth before I could take them back. I sounded every bit of the young girl I was and nothing like the seductress that had lured the school's headmaster into sleeping with her.

"There's no doubt it's not quite appropriate but I can't say I regret it," he said with a boyish charm that rarely showed through with all the responsibilities he shouldered running the school. He looked every bit of the thirty something year old that he was. "To be perfectly honest, I figured it was just a matter of time. I had hoped if it was going to happen it'd be after you graduated. Surely you don't think we'll be able to pull off this stint again without anyone noticing."

"Oh but I count on it, Charles," I said with a smirk climbing on top of him once more for round two.