Practical Applications in Mathematics

Dan entered his math class, Pre-calc, igniting the moaning that was erupting from the hall. He was still pantsless. As was Maggie, but Maggie was going to find her pants not quite fitting in a few moments. She didn’t think this one through. He thought, imagining her growing butt. As a gift he tried placing an ignorance zone around her. Unless until she found a pair of pants. Task completed he returned his attention to class. Mr. Armstrong lumbered into class. Big with arms that nearly dropped to his knees, he was the model of men that missed a day of evolution. Somehow he was able to teach math, and partially resist Dan’s alpha status mind powers.

Must be the thick skull. Regardless, he could still get away with a lot, even if he couldn’t fuck one of his classmates directly. Speaking of, Dyana sat down in front of him; winking as she did. Dyana was interesting. She had a pretty face with a small button nose, large brown eyes covered with a small pair of glasses and luxurious black hair. Yet other than that she was unremarkable. Small breasts that barely needed a bra, a flat stomach and a small butt. Maybe not after today. He mused. Ahead of him Dyana started to shimmy down her pants. Unlike Maggie, Dyana was smart enough to wear yoga pants with plenty of stretch.

Completing the maneuver she got her pants down, exposing herself. She then leaned forward and arched her back so that her sex was an achievable goal from where he sat. That was his cue. Dan gave his member a few pumps, letting the blood surge in. It lengthened, quickly achieving the full 19 inches. Unfortunately, the desk was too big. The school gave everyone full size desks and the distance was too long. Even leaning back, as awkward as the angle was, only resulted in the very tip brushing her leaking sex.

That would have been the end of it. Normally. However, Dan started to concentrate and his cock grew larger. Inch by inch the member lengthened, no longer content to just however at the entrance to Dyana’s honeypot, it pressed inward. Dyana purred in delight, shaking her ass while the cock continued its journey. Dan let it keep growing until it bottomed out inside her tight sex, and he was able to sit back normally. Now the problem. He could sit there and grow and shrink all class, but the entire process was exhausting. Dan couldn’t rock back and forth either. Mr. Armstrong had previously noticed it as excessive fidgeting.

The solution sat down next to him. Sarah Andrews. Sarah was the previous beneficiary of his improvements in this class. The same one he got in trouble for. She smirked, tucking a stray blonde hair back behind her ear. “This is new.”

“I can’t get in trouble like last time.” He nodded.

“Mmmm. But it was so worth it.” Sarah stretched, sending her arms over her head and thrusting her enlarged chest out dramatically. He liked her. Sarah had a dry wit and fun personality. Her desire to flaunt the changes didn’t hurt either. A total tomboy, Sarah wanted stronger muscles which his cum provided. The blonde was still a mere 5’6” but her muscle density was dramatically increased and her rocking body was drawing countless stares. “I’ve made it a challenge. Pin me down and you can fuck me.”

“How’d that go?”

“No winners.” She smiled maliciously. “Except you of course. How can I help?”

“Naughty girl.” Dan replied. Dyana was getting impatient, shaking her ass more, despite being speared by the colossal member.. “You can jerk it.”

“Gladly.” Herhand reached down and started to massage his cock. “Do I get another dose?”

“Maybe.” He leaned over and whispered in her ear. “I’d prefer you earn it in another way.”

She shivered. “So would I.”

Sarah leaned back at got to work; steadily pumping his member while dutifully taking notes as class continued. Dyana tried as well, but the feelings were too strong as more than once she fell into an orgasmic haze; her body jolting with pleasure. Dan felt the cum bubbling in his oversized loins; Dyana and Sarah’s combined efforts working wonders. Finally he was close to cumming.

Abandoning all pretext he reached over and grabbed Sarah. The blonde moaned as he kissed her. Her hand slammed down past his member to his balls; massaging the vibrating orbs with the urgency of the passion she felt. Their tongues dueled for dominance as his cock finally spasmed and released. Seed shot down the length of his steel hard member; propelled by large pulsing veins Dan’s divine seed poured into his brunette cocksock. She was in the middle of answering a question when it hit; the cum causing her to pause for several seconds, her voice rising several keys as she struggled to answer. One hand flew to her belly as she felt each blast paint her pussy.

Mr. Armstrong seemed content with her answer and continued on while Dyana slumped back down at her odd angle; encouraging more cum from Dan’s cock. Sarah broke the kiss as she massaged the last bit of cum out his nuts. Dan with his cock as his cum absorbed into Dyana, a few last strands dribbling out. Sarah brought his cock up and cleaned off the head. She then leaned over. “What’s she getting?”

“I don’t know yet.” He admitted honestly as Sarah dutifully put his cock away. Not that it didn’t much good. Flaccid it still hung out of his boxers. “At least some boobs that require a bra.”

Sarah whispered in his ear and his eyebrows perked up. “Dirty.”