By the time Stacy was thirteen, she had quite a reputation. All the boys at school had figured out that if you were nice to her, she'd let you up her shirt and down her pants, and the smarter ones knew that if you asked her out and bought her a nice present, you were practically guaranteed to get your dick in pussy that night. She was the closest to a "sure thing" that Carson Junior High had seen in many years.

She'd had sex plenty of times by now, mostly with an older guy down the street named Jessie, who always bought her really nice presents in exchange for sex. She didn't really like him, at least not in the sense that she was attracted to him or whatever, but she was OK with it. She sorta liked the sex; he had a big dick and it felt good when he put it in her. Sometimes, when he was happily sliding his dick in and out of her, he'd call her his dirty little whore, and that bothered her a bit, but as long as he kept giving her nice presents, she kept putting out.

What she really liked the most about the boys at school were the virgins. They were so nice to her, and they'd get so excited when they realized that they were going to get some pussy. And she could be in control, something she never got to do with Jessie. With the more experienced guys at school, she always had them wear condoms so she wouldn't catch any nasty diseases. But with the virgins, she let them go in bare, since they don't have any diseases and she liked it a lot better without a condom. And she let them finish inside her, too, fire their little loads of junk into her pussy, since she was on the pill. It made them all so happy to shoot off in a pussy. And the best thing about virgins is how quick they get their business done. Most of them don't last half a minute before they start popping their rocks off.

One thing she really loved to do at school was to tease her male teachers. A lot of the girls did it but she was the queen; Jessie loved to give her miniskirts and she loved to flash her panties at the teachers and see if she could catch them looking. Most of them are very proper, but her math teacher, Mr. Robertson, he must have been a real horny fucker because he always looked. Once she got him looking she'd tease him even more, putting her legs together, then lifting her skirt a bit and spreading her legs to give him a really good look. It's funny that he liked to look so much, since he's even older than Jessie. What a horny bastard!

One day Mr. Robertson rearranged the seating chart and put Stacy right in the front row, right in front of his desk. And she knew exactly why. The next day, she wore a miniskirt and some really skimpy little panties that Jessie gave her. They had a pop quiz, and she sat there giving Mr. Robertson the show of his life. He pretended to be reading some papers but she knew he was looking up her skirt the whole time.

After class, he's like, "Stacy, can I see you for a minute?" After the other kids cleared out, he's like, "You did very poorly on this quiz. I'm very worried that you are not going to pass math this quarter." She did really suck at math.

"I can't fail," she said, "or they won't let me be a cheerleader!"

"Well, I'd be glad to give you some extra tutoring. Why don't you come here after school today?"

She was pretty sure that he had something other than math in mind, and she thought about that for the whole rest of the day. She really didn't like the idea, he was old and kinda gross and fat and she really didn't want to do anything with him. But, she really needed to pass this quarter, and this was probably the only way she could do it. Well, maybe he'll just let her use her hands, that'd be OK. But somehow she didn't think that was very likely.

So she was a bit surprised when she got to his room after school and he was pretty much just all business. All it seemed he wanted to do was give her lots of math problems. She did her best, she really did, and he was pretty patient, lecturing her about all the things she was doing wrong, but after about half an hour they were both getting really frustrated. "I just don't think I can do it," she said.

"Well then," he responded, professorially, "I don't think you're going to pass my class this quarter."

"I have to pass!" she says, looking at him with her bestest pleading eyes look.

After he sat there looking at her for a little while, he said, "Come over here, Stacy."

Finally, she thought, as she walked over to the back of his desk and leaned against it.

"I may be able to pass you this quarter," he says. "We may be able to work something out. But you have to promise me you'll try harder next quarter."

"I promise," she says.

"Turn around."

She turned around, and he put his hand on her back, between her shoulder blades, and pushed her down so that she was face-down on his desk with her ass up in the air.

"Have you ever had sex, Stacy?"

"Yeah."

He lifted her skirt and started squeezing her ass. "I thought so," he says. Then he grabbed her panties and pulled them down, and she heard him unzip his pants and fish his dick out. She wasn't wet at all, but he didn't care, he just rammed it into her. It didn't last very long, the dirty old fart shot his rocks off after just a few strokes. Then he pulled out, slapped her behind pretty hard, and she turned around and pulled her panties back up.

"Well, Stacy," he said as he stuffed his dick back in his pants, "your grades aren't very good in my class, but if you stay after school every Tuesday for some tutoring, I think you'll be able to pass this quarter."

Fuck, she thought to herself as she walked home. She could feel his junk leaking out of her, making her panties all wet, and it was totally gross. Now I gotta do this every Tuesday for the rest of the quarter? Well, at least he got it over quick. She likes that best, when they get it over with quick.

The next Tuesday, he was all business again, having her do math problems and helping her figure some of them out. She figured this must be his way of assuaging his guilty feelings, pretending that he actually was tutoring her. After a while, he says, "Come over here now, Stacy," and she walked over to his desk and leaned over it, he didn't even need to push her down this time. He lifted her skirt and squeezed her ass a little, then pulled her panties down, fished his dick out, and did his business.

He was a bit gentler this time, but she didn't really care so long as he got it over with quickly. And he did, he must be really scared that he's going to get caught, because he doesn't take any time at all, just a few dozen quick strokes and he's shooting off.

It was the same thing every Tuesday; he tutored her for a while, then had her lean over his desk and fucked her from behind. He never had her take her clothes off, never touched her, other than to squeeze her ass a bit or slap it when he was done. He never had her touch him or suck him or anything, he never even took his pants down, just fucked her with his dick sticking out of his fly. In fact she never even saw his dick, except when he was stuffing it back in his pants after he'd finished.

The funny thing was, she was actually getting better at math. He might not have really intended it, but his little tutoring sessions were working. She was actually passing math on her own. But she kept going to his room on Tuesdays, partly because she felt grateful to him for helping her, and partly because she had sort of started liking him, not in a sexual way or anything like that, but she sort of felt sorry for him because she figured Mrs. Robertson was probably a cold old bitch and this was probably the only pussy he ever got. Even old farts like Mr. Robertson need to get some pussy, right?

But, she started feeling like the relationship was pretty one-sided, so once the next quarter started, she went to his room Tuesday after school, but she decided she was going to tell him this was the last time.

"Mr. Robertson," she says, "I'm doing really good at math now, I don't think I need any more tutoring."

He looked pretty disappointed. "Yeah, you've been doing very well. I'm very proud of you."

She thought that was a really sweet thing to say, and she felt a little sorry for him, too. "We could... you know, do it one more time, if you want."

He smiled, very big. "That'd be nice."

She walked over to him as he sat behind his desk, but she didn't lean over his desk this time. Instead, she sat down on his lap, facing him and straddling his lap. Then she took his hands and lifted them up and placed them on her breasts. He was grinning while he squeezed her little teenage tits, and she reached down and started undoing his pants. "I've never really seen your dick," she said as she fished it out of his boxer shorts. "Oh, it's really big!" It wasn't; she knew it was pretty small just from how it felt in her pussy. She'd seen fifteen year old virgins with bigger dicks than Mr. Robertson, but she knew guys loved to hear how big their shit was, so she did her part.

She started beating on his dick with one hand, and reached around her back and undid her bra with the other, and he slipped his hands up her shirt and started feeling the bare skin of her tits. She let him enjoy her boobs for a while, and then she sunk down on her knees and took his stubby little cock in her mouth. It tasted pretty nasty, but he was obviously in heaven, cradling her head sweetly and moaning. I bet Mrs. Robertson hasn't gone down on him in ages, Stacy thought.

She took his dick out of her mouth and looked up at him. "Mr. Robertson," she said, all innocent school-girl, "would you please show me your balls?" The horny old bastard had his pants down in a second, and she lifted his shaft and leaned over and kissed his balls. "They're really big, too," she said, looking up at him. Then she stood up, slipped her panties down, and leaned over his desk.

She was super wet this time when he slid his little dick in her. It was nice this time because he kept his pants down and she felt his hairy little balls settle up against her and then start thumping against her clitoris as he started fucking her. He took his time this time, or at least tried to, stopping with his dick all the way inside her and reaching around and fondling her tits, but even so it didn't take long for him to start shooting off. He pulled out of her when he finished and gave her rear a sharp little whack, like he always does.

She turned around and pulled her panties back up, then latched her bra again. "Thanks, Mr. Robertson," she said.

"Thank you, Stacy!"

"Thanks for all the help tutoring and everything."

"Of course, sweetheart. Now, you keep your grades up, or we'll have to have some more tutoring sessions." He gave her a big grin.

"Wouldn't you like that!"

That night, Stacy went over to Jessie's house. He gave her a little present, and she stripped for him, and then lay down on his bed and he climbed on top of her and put his dick in her. It felt good, his dick is so big, so much bigger than Mr. Robertson's, and he fucked her for a very long time, until she was stretched wide and sore and just wanted him to get it over with, but he still kept going. He was holding her head tight and he whispered in her ear, "You're my dirty little girl, right?" She nodded. "You want me to come, little girl?" She nodded again. "Yeah? You want me to finish off, dump my load in your nasty cunt?" Come on, she thought to herself, just get it done, would ya?

He pulled his cock all the way out of her. "Tell me you're a dirty little girl."

She gave a sigh. "I'm a dirty little girl."

"There you go." He slammed his cock in her. "There you go, dirty little girl." About four more hard, even violent strokes, and he started unloading.

Jessie sure knew how to fuck her. She was totally glad that he was her lover and that she was his dirty little girl.