"Newton's first law?" Ms. Van Dorn asked as she licked a line slowly up Kevin's cock.
"F-for every reaction, there is an equal and opposite reaction," Kevin answered. He gripped the edge of the desk, staring at his Metallica poster and trying to concentrate.
"Correct," she raised herself up on her knees a bit and wrapped her all-natural D-cups around him. She slowly, teasingly, slid them up and down. She looked into his eyes and grinned. "The second?"
"Second..." His head was spinning. Her tongue was dancing all over the head of his cock as her breasts enveloped him. He could feel her nipples on his abdomen. He could savor the warmth of her lips around him. "Objects...objects at rest...Fffuckkk!"
"The second?" Ms. Van Dorn repeated between licks and kisses.
"Objects at rest...they...oh fuck! I'm gonna cum!" Kevin's whole body was tensing. One hand shifted to Ms. Van Dorn's long red hair and he thrust into her face. "Can I cum on your face?"
"No." She shook her head, giving Kevin a squeeze at the base of his cock with her soft hand. He let out a loud grunt. His torso bent forward and Ms. Van Dorn felt his semen surge up through him. It rippled across her grip and shot out in long spurts as she jacked him all over her ample chest. She aimed his cockhead over her left nipple, coating it with slippery stuff before wrapping him in her breasts again. Kevin was trembling by the time she was finished.
She snatched a towel from the bedside where she'd left it, and cleaned up. She pulled her silky blouse back on, and pinned her hair back up over her head. She slipped on her glasses, grabbed her books, and then gave Kevin a peck on the forehead.
"If you memorize the rest of Newton's laws, you can cum on my face. Deal?"
"Deal," Kevin agreed breathlessly.
"See you next week then," she purred and walked out of Kevin's room.
Kevin tilted his head back and let out a delighted breath. He had been struggling with his grades in his last year of high school. He had a potential basketball scholarship waiting for him, but he needed to bring his grades up. He had put too much time into free throws and pass drills than trigonometry and physics. Physics was especially vexing for him. His family saw him struggling, so they got him a tutor.
Nikki Van Dorn. Kevin still didn't know how old she was, but she couldn't have been over thirty. He and his family met with her three months ago, and he couldn't believe his eyes. She sat there in a smart business suit that reminded him of Scully from "X-Files". He kept staring at her chest, and her strong legs under those black hose, and he was sure she knew it. He barely remembered the conversation she had with him and his parents. He just knew that she would meet with him a week from then. He spent the rest of the night jacking off to her image until he fell asleep.
They worked together for a month before the ice broke. She confronted him on his staring and fidgeting, and he admitted to finding her very attractive. She then admitted the same to him. She had broken up with a long-time lover a while ago, and hadn't been on a date in months. They kissed that night, but that was all. The next time it was kissing and touching, and he wanted more, but she made him promise to ace his trigonometry test that week. If he did, she would let him put his hands all over her. He never studied so hard in his life. He showed her the "A", and she opened her shirt for him. He could remember how his hands shook as he touched her breasts. He could still remember the look on her face as he pinched her nipples and made her knees bend. He remembered how wet she was on his fingers, and how sweet she tasted.
His blowjob today came as a result of getting a perfect score on a pop quiz in both trig and physics. Now he had a new goal. If he could memorize Newton's laws, Ms. Van Dorn's face would be sticky with his cum a week from now. His ultimate goal was set the night he touched her. If he could graduate with a perfect GPA, she would let him fuck her as long as he could last.
Kevin cleaned himself off as Nikki Van Dorn headed down the stairs of the Brannigan family home. She smiled to herself, still enjoying the sticky sensation on her breasts. The Brannigan family paid her very well, and her little fringe benefits with Kevin were very sweet indeed. She could get perfect results from him with a little coaxing, and that made the family very happy. When Kevin's grades started to turn around, she was rewarded with a bottle of Merlot from the family, and she had been invited to the upcoming St. Patrick's Day party, which was apparently a huge bash for the family and their friends and co-workers.
"Hey, Nikki! You're still comin' to the party, right?" Mr. Ed Brannigan called from the kitchen as she walked by. Nikki would've been able to hear him if he was in the garage. He was a big man, with a strong voice and a thick body. He had worked construction for many years, slowly building up his own business.
"Absolutely, Mr. Brannigan." She smiled at him. "This is the first party I've been invited to since my friend's bachelorette party."
"It'll be a great time, but I warn ya! It gets pretty crazy in this house on St. Patrick's Day! You get a bunch of Irish drunks running around half-naked singin' songs and well, things sometimes get out of control."
"Sounds like the bachelorette party alright!" She laughed. "Do I need to bring anything?"
"Just your pretty self." He paused to spread mayonnaise on his sandwich. "You know, Nikki, I wanna thank you again for all you've done for Kevin. You're a great tutor."
"It's my pleasure, Mr. Brannigan," she assured.
There was an awkward moment of silence.
"Well, I'd better get back before my cat gets any hungrier. I'll see you at the party!" Nikki smiled and waved as she walked for the front door.
"Yeah! See you then!" Ed called as the front door opened.
In walked Mrs. Shelley Brannigan. Shelley had just returned from working at the hospital office and she looked tired. However, her long day couldn't hide her beauty. Her blond hair was cropped short for efficiency and her body was well-toned from lots of Tae Bo and work-outs on the treadmill. She kept herself in better shape than Ed did, and Nikki wondered if he noticed. She certainly did.
"Hi, Nikki!" Shelley gave her a hug. "Coming to the party next week?"
"Absolutely!"
"Great! See you then!" She called over her shoulder as she walked down the hall, and there was a brief look between them that Nikki mused over.
Yes, you certainly will see me. Nikki thought.
"Yeah! Oh fuck yeah!" Kevin cried out as he shot hot cum all over Ms. Van Dorn's face.
They had sneaked away from the raucous party downstairs. Kevin recited every law by heart, without one error or stutter. Nikki, who had a couple pints under her belt, immediately dropped to her knees and sucked him off. Now, Kevin was looking down at his tutor, her pretty freckled face and glasses all streaked with cum. She kept sucking at him, licking at him, kissing at him, and rubbing him all over her face until her lips and chin were a gooey mess. She looked up at him and giggled. He smiled and wiped some of his jism from her jawbone, then sank his finger into her mouth. She hummed happily as she licked it dry and then stood up, a little dizzy.
"Had too much Guinness?" Kevin asked.