I walked into Mr. Arnold's office with a bit of trepidation, but I thought that I knew what I was doing and could handle myself. I had gotten an F on my latest History test, and knew that with a grade like that my parents would kill me for sure. I couldn't afford to have that happen, so I had decided to see if I could sex my way into a better grade. I was far from a virgin. I had given plenty of blowjobs, and figured that was all that Mr. Arnold would require from me, but even if not, I was experienced with vaginal sex as well, and my specialty was titty fucking. My 36D breasts were great for it, and guys seemed to like it. How a chubby, bordering on fat, girl like me had gotten so many guys to sleep with me was a mystery to many, but I guess high school guys are just desperate.
I walked up to his desk to get his attention. I had decided to come in before history class that day, as I knew that he would be in his office then and I had a free period. I had a lot of free periods this my senior year, as I didn't really give a shit anymore. I laid the test on his desk and waited for a response. I got none.
Eventually I spoke up. "Mr. Arnold, I cannot afford to have an F go on my record. Surely there is something that can be done about it. If, say, a girl was willing to earn a little extra credit," I said, in my most sultry voice. He finally looked up, and stared me straight in the eyes. I was beginning to get a little unnerved when he finally spoke up.
"What exactly did you have in mind, Missy?" he asked me. I gulped, having expected him to lead me to it and not to have to admit what I meant.
"Well, I am a woman, and you are a man, and I thought maybe you could, you know, trade some physical pleasure for a better grade for me," I said, trying to sound self assured. "I am not a virgin or anything, I know what I am doing."
His answer was swift and sure. "Close the door, strip naked, slowly, and then bend over with your hands on the chair and your legs spread," he instructed, and I grinned.
"This is going to be easier than I imagined," I thought. "So I will have to have his dick in my pussy, big deal. It is so worth it to get an A. After all, he isn't too awfully ugly." I went to the door of his office and closed it quietly, returning to the center of the floor. I took off my clothes one at a time -- my shirt, then my skirt, then my lacy red bra, followed my my lacy red panties. I stood there in just my socks and shoes, having forgotten to take them off.
He did not say anything about my feet, rather he came over behind me as I bent over the chair, kicking my legs even further apart than I had them. With no warning at all, I felt him enter my pussy. I had made sure to masturbate before coming so that I would be wet enough if need be, and he had no trouble entering me. His dick was much larger than most I had fucked, but it was pleasurable, not painful.
He did not say a word as he fucked me, taking his time, slowly moving in and out of me. Despite myself, I began to feel an orgasm building inside me. I tried to restrain myself, but couldn't, and before I knew it, I felt myself cumming all over his dick as he continued to pound me. I cried out in pleasure as the waves overtook me. He still did not say a word, but continued to pound away inside me, until at last I felt him hold my body to his as he emptied his seed inside me.
He pulled himself out of me abruptly and told me immediately to put my panties back on. I did so, wondering why he was being so abrupt, and afterwards reached for my bra. "No," he said, taking it away from me. "First clean me off."
I gulped, not really wanting to taste our mixed juices on his cock, but did so anyway, really wanting that good grade. I could feel his cum inside me beginning to leak out into my panties. I finally cleaned him to his satisfaction, then was given my clothes to put on. By that time it was time for class, so we left his office together and headed down the hallway to the classroom.
I sat in my usual chair in the back row, got out my books , and began to daydream until I heard the bell ring. I had no idea that this class would be any different than any of the others, other than my panties full of cum. As soon as the bell rang, Mr. Arnold closed the classroom door. "OK class," he said in his usual dull tone, "today we are going to do a little show and tell, to change things up a bit." I wondered what was his deal today, but didn't think much of it until he called my name.
"Missy, why don't you go first?" he said to me, and I gave him a startled and confused look.