When he showed up - promptly, of course, as any square numbers guy would - he was tricked into her bedroom. Obviously, there was a lot more to Erin's graduation plan than she let on. He was a little confused, as well as worried about crossing the invisible student/teacher boundary, but Erin's teacher really didn't need to read between the lines to see how Erin planned to bring her math grade up when she reached over and massaged his crotch through his black khaki pants.
As a "stick in the mud" education professional, Erin's math teacher wasn't used to being propositioned by horny young women. He had heard stories of things like this happening before, and which have lately become the focus of many of his masturbatory fantasies. He knew he shouldn't do anything with Erin. "Hell", he thought, "I could lose my job!!" But his already weak will power was ultimately conquered once she pulled out his rigid penis, and started sucking on it.
Erin's math teacher couldn't remember the last time he got a blowjob that felt this good, or even the last time getting head from a girl so motivated to please. He wondered how much experience Erin actually had sucking on her boyfriends' dicks, since it was obvious from the way she used her young mouth that this wasn't the first time she has sucked a penis. Erin also knew from experience that she couldn't keep polishing his knob much longer because he felt like he might spoil her plan by coming too early.
Once Erin knew the blowjob had her teacher completely wrapped around her finger, she stripped out of her clothes seductively, but quickly. As she pulled her cotton panties down her slender legs, she noticed that they were soaked with her vaginal juices, and it was now or never to earn that diploma. Throwing him backwards onto her bed, she quickly straddled her hapless teacher, and lining up the tip of his penis with her wet opening, carefully eased her tight pussy down his thick shaft.
Completely losing his will power, Erin's teacher let his usually repressed libido take over. He turned the horny teen girl onto her side, and pistoned his dick into her pink twat with more and more force. With the head of his dick rubbing her g-spot, it didn't take long for Erin to feel her orgasm about to wash over her nubile teen body. Her shuddering climax caused her to tense up in pleasurable spasms, and her teacher could feel Erin's young vagina clenching at his cock with a tightness he's never felt before. He felt his own eruption building deep within his own loins, and pulled his cock out in time to ejaculate his thick, creamy cum all over Erin's pretty face. She surprised him even more by licking some of his semen right off her lips and swallowing.
"So," Erin asks him while kissing him lightly on the lips, "will I graduate?" Catching his breath, her math teacher replied, "Maybe." Erin reached for his cock again, and started to lightly stroke it back to life, "How about if you tutor me every week, or every day?" As he felt his manhood stir back to life, he said, "In that case, I think you have a great chance of passing."
"Awesome," is all the teen had to say before taking his dick into her mouth again for another math lesson.
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