The Teacher heard his doorbell ring. He left his lesson planner and the papers he was grading on his coffee table and got up and walked over to answer the summons. He opened his front door to find the Concerned Mom waiting patiently, on time for their appointment to discuss the problems her son was having in his Biology class.

He immediately noticed the way she was dressed. The Concerned Mom was short and solid with auburn hair, with her substantial breasts enhanced by the rather tight shirt she was wearing. It was a Henley-style shirt, with only half of the buttons attached, allowing for a fair amount of cleavage.

The sight struck him immediately, and he realized this could turn into a very interesting evening, if he was willing to take a chance on losing his job. The way she carried herself and the aura she exuded, he thought, it might very well be worth taking the risk.

"Come in," he said. "Welcome to my home." She stepped up and crossed into the foyer. As she passed by, he extended his hand to guide her, touching the small of her back. He felt what was almost an electrical shock when he made contact with her, a shock that reverberated through his entire body. And he could sense a similar reaction from her, a hesitation and perhaps a slight shiver as she walked alongside him into the living room.

She stopped and turned to face him as his hand was still in contact. It slid from her back to her side as they stood quite close together. "I appreciate you seeing me after school hours," The Concerned Mom said. "I'm sorry I couldn't come during the regular time for these kind of meetings, but I had to work. You show great dedication to your students, because most teachers wouldn't meet this late, and in their own home, to boot."

"Well, thank you very much," he said. "The welfare of the students I teach is very important to me. And in the case of your son, there's some urgency to the situation."

She grimaced. "I know," the Concerned Mom said. "He's been struggling with Biology since the beginning of the year. His grades are so horrible that he's in danger of flunking, and that could ruin his chance to graduate and get into college."

"There's no reason he shouldn't be able to get at least a B," the Teacher said. "He's obviously very bright, very imaginative. His problem is that he doesn't seem to put any effort into his work, when he even bothers to turn it in."

He paused. "A lot of students complain about all the work they have to do. I have a simple philosophy – you have to do the work to learn anything. To really internalize the knowledge, it takes a lot of sweat. I work them hard because that's the only way to really get anything accomplished, in Biology class, or in life for that matter."

"I understand that," she said. "I've always felt that way, too. Anything worth doing means you have to be willing to work at it. And I'm willing to do whatever it takes to help my son pass this class."

"Well, the first thing is to get him to do the assigned work. He can't move forward until he stops moving backwards. That's physics, not biology, but the principle applies here as well."

She gave the Teacher a long look. "I've been pushing him to do that, and he's finally started listening to me. But I'm afraid he has too much ground to make up to really get his grade to where it should be. This isn't my best subject, so working with him on this won't help him all that much."

The Concerned Mom stopped, then took a deep breath and began speaking in a nervous tone. "I know you don't have time to give him extra help. Maybe you can tutor me on Biology, and I can do what I can that way to help him." She licked her lips and gave a nervous smile.

The Teacher couldn't believe what he heard – and saw. His stomach gave a lurch, and a little further south, he felt a stirring. Oh my, he thought, I hope I'm not misreading the situation. But if I'm not....

He gave a small smile and asked "What do you mean?"

She inched closer, and put her hand on the inside of his upper thigh. "Whatever you think is necessary, I'm willing to do."

"Really?"

"Really. I mean it." She licked her lips again, and smiled.

He looked her in the eye, then his gaze traveled downward, and he saw her cleavage and her breasts straining at the fabric of her shirt. He shivered just a bit and again looked her in the eye. She smiled again.

He took the plunge. "I'm more than willing to tutor you on Biology. I recommend we begin immediately. There's no time like the present."

"I agree," the Concerned Mom answered and moved closer to him on the couch. Her shifting of weight caused her breasts to jiggle and he noticed that her nipples had become erect. He felt his own body stir in response.

"Biology is a broad subject. Which part of biology interests you most?"

She smiled. "That's easy. Human sexuality is the one part of biology that I've always really enjoyed. I'd like to learn more about it. Would this be a lab class?"

He answered immediately. "Absolutely. The only way to really learn things it through hands-on experience. It's also the most enjoyable, especially with this segment of the study of biology."

The Teacher turned to her and placed his hands on her breasts. She shivered and leaned into his touch. He began. "Human females are the only mammal that has breasts that are large even when they're not nursing young, to attract and keep males interested."

She placed her hands on top of his. "Do you think my tits are large? Do they keep you interested? They must. You kept staring at them earlier tonight."

He squeezed gently. "They certainly are. They're quite beautiful."

"They're prettier when you can actually see them." And with that, she took her top off, and undid her brassiere. "Is that better?"

He swallowed to regain his composure.

"Absolutely. Your tits are incredible." He leaned over and took the left nipple into his mouth and began to lick and suck on it.

Her breath caught, and she grabbed his head and pressed it to her and gave a little moan. Then suddenly, she pushed him away. "Not so fast. You take your shirt off, too."

He began to comply, and then stopped. "I have a better idea. Let's head back to the bedroom and get undressed. That should make it easier to continue the tutorial." She nodded, and got up off the couch.

They walked back to the bedroom and closed the door. He took off his shirt, and she moved close to him. "Let me help," she said huskily and began to unbuckle his belt and unzip his pants. Her hand stopped when the zipper was lowered, and she gave his rapidly growing member a gentle squeeze. "Nice." She reached into his briefs.

He had his own answer to her caresses. He reached down and undid her jeans, unzipped the fly, and began pushing not just the jeans but her panties down her legs. They both stopped, and completed removing their clothes. He marveled at her tits once again, and his growing reaction to her body made her smile.

"I'm ready to continue the tutoring session," the Concerned Mom said and walked over to the bed. "Waterbeds are nice. They're nice for a lot of things."

She then pulled down the sheets and lay down on the bed. He walked over and lay down beside her. "Human sexuality is an amazing thing," he said.

"Men are visual creatures. The sight of tits like yours is certainly very arousing, as you can see."

"I see that. Hard to miss something that size." She smiled. "I certainly wouldn't want to miss that!" She reached down and grabbed him.

"Foreplay is important, isn't it?" He gasped at her touch. "I know I've always enjoyed it. I really like sucking dicks, especially big ones like yours."

Before the Teacher could react, the Concerned Mom shifted on the bed and began to take his rigid dick into her mouth. She licked around the head, and then dipped her tongue along the glans and he let out a moan. She smiled and then began taking the shaft into her mouth, a little more each time until he was halfway engulfed between her lips.

She began bobbing her head in rhythm. That's when she looked over at the large mirror alongside the bed. She pulled his dick out of her mouth and spoke. "I really like watching this. Don't you?"

She returned to work, but instead of sucking on his dick, she dipped her head lower and began licking his balls.

"Boy, these are nice balls." He let out another moan. She took one into her mouth, sucked briefly, and then repeated the process with the other. He began to moan again. "Something wrong?" she asked with a mischievous look on her face.

"N-n-n-n-n-o-o-o-o-o," he stammered.

She then sat up. "What about other kinds of foreplay? You know, like eating pussy?"

"Well, that's something else we can cover," he said. "Please lie down and spread those lovely thighs of yours."

She smiled and did just that. The Teacher scooted into position and took a deep breath and inhaled the scent of her excitement. "Pheromones are very important," he said. "Breathing in the scent of your pussy gives me the indication that you are really, really horny and ready to be licked and eaten like this." And he went to work.

First, he ran his tongue around her pussy lips, completing an entire circuit. He then turned his attention to her clit, which was reddened and engorged and obviously very stimulated. He began to lick and suck on her clit, and she let out a moan. He then moved down her slit to the hole. He again took in her scent with a deep breath and began sliding his tongue into her pussy. She let out an even louder moan, and he realized that's what really got her going.

He stiffened his tongue as best he could and began thrusting it in and out. She moaned again, louder and grabbed his head with both hands and buried him deeper into her pussy. He kept thrusting and licking, enjoying the taste of her excitement. Her juices were flowing, but he knew this was just the warmup. Time for the main event.

He pulled his face from the "Y' formed by her shaking legs and moved away while she gave a little moan of protest. He laughed.

"That was just getting things ready for the most important thing of all." He smiled. "All of that was just getting your pussy prepared for the real deal. Do you like fucking? Do you like the feel of a dick inside your pussy, filling it up?"

The Concerned Mom looked at him. "Of course I like fucking. I especially like fucking big dicks like yours. Now!"

The Teacher smiled, and complied. "Here we go. Your pussy is so wet and ready." He slid into her and heard her gasp and she hitched her hips to accept him into her tight slit. He stopped, slid out almost all the way, and slowly, thrust after thrust, worked his dick deeper and deeper inside her.

Each thrust was met by her rocking her hips to pull his dick deeper into her pussy. "You like how that feels?" he gasped. "Your pussy is so wet and tight and perfect, and oh my god I'm going in deeper."

She began saying "Yes. Yes. Oh. Yes." Then all conversation stopped. Both the Teacher and the Concerned Mom were beyond speech. They rocked and thrust and rocked and gasped, faster and faster, their breaths catching as they sped toward that goal.

Explosion.

His world seemed to end, his head exploding, his balls contracting as he began to come deep inside her, shooting huge gobs of his essence into the core of her very being. She too began to cry out as her pussy walls began pulsing and contracting in giant spasms. It seemed to go on forever, and it seemed to end in an instant.

The feeling of timelessness ceased, and all motion stopped. He felt her pussy gushing the cum he had just filled her with, deep inside to her core. He paused and looked down at her.

The Concerned Mom looked up and said, "You're a very talented teacher."

"You are an amazingly gifted student," the Teacher replied. "I believe you need more tutoring sessions, however."

She nodded. "I agree. I like learning things, especially with your one-on-one instructional style."

He smiled at her. "You know, laying here like this, with my dick deep inside that beautiful pussy of yours, you have never been more beautiful. You look ravishing, laying there naked with your legs wrapped around me."

She laughed. "You just ravished me. And I'm not totally naked. I have your cum leaking onto my legs." She then thrust her left arm into the air, and indicated the ring on my finger. "I also am wearing this wedding ring."

He took her hand, and kissed the ring. "It's a beautiful ring. I wouldn't have bought it for you all those years ago if I didn't find a ring as beautiful as the bride who would be wearing it."