Sara is married with a son named Frederick. He is 18 years old. Her husband Steve is always working, she considers him a workaholic. Sara a 45 year old stay at home mom, who feels she is missing out on life, she has a nice house and new car, but she is lonely, finding excitement having an affair with her husband's accountant Robert. The nightmare starting in December five months ago, when stopping over her house not only going over household expenses, Robert talked the lovely mature mother out of her panties, ending up on the couch, her nude and him between her legs eating her and finally talking her into intercourse.
Today Robert stopping by to deliver current financial information for her husband, it is Friday afternoon, a replay of their first time copulating ensued, the couple ending up on the living room couch. Her nude, with her legs spread, him rubbing her vagina vigorously with his right hand, she is moaning loudly, Bob playing with her nipples with his left hand, when from the side door her son calling out and walking in on them. She hurriedly is covering her body, by pulling her dress over her torso and Bob quickly moving away both looking guiltily at her son.
Freddie said, "Hi guys!" Smiling at them and went to his room without a backwards glance, seeing their intimate activity as he entered the house, but not acknowledging he saw anything.
Bob left and Sara went to Freddie's room to talk to him. He said nothing about what he saw. She let it go rationalizing, "Maybe he didn't notice." She thought.
A few days later Freddie came home from school with a hand full of papers. He gave them to his mother and said, "You or dad has to help me with these the teacher said."
Sara opened up the literature, the year was 1980, the educational system was testing a prototype for health class in their school system under a grant from the federal government; it was a sex education booklet called 'Your Body and You' for seniors in high school. On the inside of the first page was a notice to the parents asking them to go through the material with their children? Sara was embarrassed by the content of the booklet, as the subject of sex was never talked about in their family. On the other hand Fred was not completely innocent he has had a few girlfriends he has gotten to third base with, but he really wanted to get to know his mother better. He knows she is fooling around with Robert from what he saw the other day when he came home.
"I will have your dad go over this material with you Freddie." Said Sara.
"I want you to go over this material with me Mom, dad is never home. I need to know the material for a test in the next few days." Said Freddie.
She sighed and said, "OK."
Everything is going well while they are going over the male anatomy and Freddie knows most of the answers for the quiz. When coming to the female anatomy, Freddie feigned ignorance about the female anatomy as his mother asked him questions from the test.
Sara was shocked when Freddie while looking the diagram of the female anatomy asked Sara. "Is this what you look like Mom?"
Sara turning red said, "Yes Fred, all women have basically the same body parts."
"Great" Freddie said, "I need to see you naked, so I can pass the test."
Sara almost fainted she was so embarrassed saying. "I don't think it would be right, I am your mother."
"Oh, it's OK to show your body to Robert who was here the other day, but not me your son, so I can learn something right?" Fumed Freddie as he walked out of the study.
Sara was very frightened presently, if Steve her husband ever found out he would divorce her. She realized she was in big trouble at this moment.
The next morning as Freddie was leaving for school he gave his mother an ultimatum saying. "Mom I am going to tell dad what I saw the other day in the living room, if you don't let me use you as a model to become familiar with the female form, when I get home from school today."
Sara is nervous about the afternoon when Freddie comes home. She didn't know what to do, after giving the situation much thought, rationalizing she is performing a service showing her son what a woman looks like, so women won't be a mystery to him as far as their anatomy is concerned. Their thought process will be a mystery him, as he will find out when he interacts with women throughout his life.
Sara is upset with her current problem, if she didn't have their accountant come to their house, she wouldn't be in this situation presently. They should have gone to a motel as they usually did. She will have to deal with it this afternoon, when Freddie comes home, if he says anything to her. Hopefully he was just trying to get her attention and will not make her go through the humiliation of having to show him her body.
Sara called Robert, "Robert you busy?"
"No, why?" Asked Robert.
"Can we go to Motel 6 for a few hours I have something I want to run by you." Said Sara.
"I will be there in about 20 minutes." Said Robert.
When Sara arrived at the Motel Robert had already paid for a room and was waiting in his car for her. They entered room 12 and before the door closed Sara was undressing, lying on the bed relaying to Robert what she will have to do after Freddie gets home from school. Robert was playing with the mature woman's pussy throughout her description of her afternoon when her son arrives home.
By the time she was done describing her coming humiliation Robert had 3 of his fingers in her pussy pumping them in and out of her box on her way to her first orgasm of the day. Robert ripped off his clothes and joined Sara on the bed. She slid down to take his organ in her mouth deep throating him. He did not last long Cuming in her mouth she swallowed the whole load not missing a drop. Sara sucked his cock back to life and he rolled her over, got between her legs and pushed his cock into her with one slow long stroke, picking up speed as their passion grew. They both came at the same time.
Fred came home at 3:00 from school he had more papers for her. She put them aside for now. Sara had to find out if Freddie remembered about this morning, if he was going to tell his father, if she didn't let him see her nude.
"Well!" Freddie said.
Sara's heart pounded in her chest as she says. "Well, what?"
"Are you going to help me with health class?" Said Freddie.
"OK!" she said, "But only one time."
"No!" Fred said, "When I tell you I want to see you, you're going to have to let me or I will tell Dad."
Sara countered, "I will let you examine me whenever you want, as long as you keep your marks up to a 'B+ to low A' during the rest of your school career." Rationalizing she is doing this to give him an incentive to keep his marks up.
Fred thought for a while then said. "That's reasonable; it will give me incentive to keep my marks up. This will continue until I have a girlfriend or leave for college in September." Smiling at his mother happy with the compermise.