Human Behavior Observation Experiment
Copyright© 2025 by danbaifen
Chapter 13
Incest Sex Story: Chapter 13 - That night, Allison had a nightmare. She dreamed that she had committed incest with her son and got pregnant and married, and people found out. Everyone called her a slut, a shameless bitch, and a beast... She screamed "No..." When she woke up, she was already in tears.
Caution: This Incest Sex Story contains strong sexual content, including Incest Mother Sister
Just then, there was a gentle knock on the bedroom door.
“Mom, can I come in?”
It was Colin’s concerned voice.
Allison shuddered and wiped away her tears hastily. She took a deep breath and forced a smile.
“Come in, son.”
Colin pushed the door open and walked in, holding a bowl of steaming ginger soup in his hand.
“Mom, I made some ginger soup. It’s good for your health.”
He said it gently, but his eyes seemed to see through his mother.
“Thanks...”
Allison took the bowl and took a sip.
The spicy and rich ginger soup immediately dispelled the gloom in her heart.
She looked at her son with gratitude and smiled from the bottom of her heart.
“Mom, you are very tired these days. You should take a rest.”
Colin sat down on the edge of the bed and held his mother’s hand.
The warmth from his palm penetrated her skin and burned all the way to Allison’s heart.
“I’m fine ... I’m just busy with work...”
Allison blushed and tried to pull her hand back, but Colin held it tighter.
“Mom, if you have anything on your mind, you must tell me.”
Colin looked at his mother seriously, his eyes firm and affectionate.
“No matter what happens, your son will always be your strongest support.”
Allison felt a warm sensation in her heart and a sore nose.
She nodded, tears welling up in her eyes again.
“Mom knows ... With you here, I’m not afraid of anything...”
“That’s good.”
Colin smiled, a hint of warmth spreading across his brows.
He leaned over and placed a kiss on his mother’s forehead, making Allison’s heart flutter.
“It’s getting late, Mom, go to bed early. I’ll go wash the dishes.”
After saying this, he considerately turned off the lights and walked out.
The room returned to darkness, but Allison’s heart brightened.
With my son guarding me, it seems that all the hardships are no longer scary.
She slowly drank the ginger soup and fell into a deep sleep. That night, she had a very long dream. In the dream, there were her son’s broad arms and his shining eyes...
Colin noticed the changes in his mother, and he knew that the seeds of sin had been sprouting in his mother’s heart day by day. Now the seedling called incest was growing vigorously, and the day when it would be launched and completely conquer his mother’s body and mind was not far away.
He has a girlfriend named Heather, who is a sweet-looking girl with a nice figure.
Colin brought her home and introduced her to his mother with a smile: “Mom, this is my girlfriend Heather. She’s nice, isn’t she?”
Allison forced a smile as she looked at the girl, but she felt an indescribable bitterness in her heart.
“Yes, it’s normal for my son to be surrounded by girls since he is so outstanding. But why do I feel ... jealous?”
“Hello, Colin always tells me about you, saying that you are the most beautiful and kind woman he has ever met.”
Heather smiled sweetly and greeted Allison politely.
Allison noticed that Heather’s hand was around her son’s arm, and the two looked very close.
Her heart sank even more.
She forced a smile and asked them to sit down and have some fruit.
She was distracted during the meal, with her mind filled with the image of the girl snuggling up to her son.
After dinner, Allison returned to her room, not wanting to see the two of them being so affectionate anymore.
In the room, she sat dejectedly on the edge of the bed, feeling extremely confused.
“What’s wrong with me? How can a mother not tolerate her son’s girlfriend? But I just can’t control my inner anger and anxiety. I can’t help but think back to that night when my son rode on me. He was so strong and powerful, occupying my body and mind ... Now, will he treat that girl the same way?”
Thinking of this, her heart felt like it was being tugged at. Tears welled up in her eyes uncontrollably, and she wiped them away hastily, laughing at herself.
“Allison, Allison, do you have any shame? You are a mother, but you are jealous of your son. Are you worthy of being his mother?”
But she couldn’t act as if nothing had happened, she couldn’t turn a blind eye.
Colin had planted the seed of desire in her heart, and now it had broken through the ground and could no longer be eradicated.
She longed for her son’s caress and possession. Even though her mind kept telling her that this was against human ethics, she still couldn’t control her inner desire...
Just then, there was a knock on the door.
Allison hurriedly calmed herself down and went to open the door.
It’s Colin.
“Mom, what’s wrong with you? Why are you hiding in your room?”
He asked with concern, his eyes scanning his mother’s face.
Allison hastily turned her face away to hide the traces of her crying.
“Nothing, just a little tired...”
She said it casually, trying not to look her son in the eye.
But Colin refused to give in and pulled his mother’s hand.
“Mom, you’ve cried, haven’t you? Did I do something wrong to make you sad again?”
Allison’s heart trembled and she shook her head in panic.
“No, really not, I’m just a little tired from work recently...”
Allison explained incoherently, feeling guilty and not daring to look him in the face.
Colin stared at his mother, his eyes sharp as a sword.
After a long time, he sighed.
“Mom, if it’s about Heather, don’t take it to heart.”
He said comfortingly, “Actually, she and I don’t have that kind of relationship, we’re just ordinary friends. I just want to make you jealous...”
Allison’s eyes widened, she couldn’t believe her ears.
“What does this mean, son? Is he teasing my feelings? But the expression on his face is clearly full of sincerity and eagerness.”
“Mom, you know, just now in the living room, all I could think about was you.”
Colin spoke word by word, his burning eyes almost burning through his mother.
“As soon as you returned to your room, I found an excuse to send Heather away. I just wanted to come to you as soon as possible and hug you...”
Before he finished speaking, he put his arms around his mother’s waist and held her tightly in his arms.
Allison struggled in panic, but her cheeks were burning hot unconsciously.
Her son’s warm body temperature and familiar breath made her feel numb all over and she was at a loss.
“Mom, I love you.”
Colin whispered in his mother’s ear, his hot breath on her neck.
“I’m going to marry you, you’re my woman...”
As soon as he finished speaking, he kissed his mother’s lips and invaded her mouth domineeringly.
Allison instantly collapsed in her son’s arms, her sanity completely broken.
She closed her eyes, offered her lips and tongue, and kissed her son passionately, never wanting to break free...
Colin’s hands wandered restlessly over his mother’s body, caressing her curves through the thin nightgown.
He kneaded his mother’s plump breasts and teased those two cherry red spots.
Allison couldn’t help but arch her body to respond to her son’s caress, moans escaping her throat.
“Mom, I want you to...”
Colin panted, ripped open his mother’s pajamas, and put his right hand into her panties.
Allison’s private parts were already muddy, and Colin easily slipped in and stirred around in his mother’s garden.
“Don’t ... don’t do this...”
Allison whimpered and tried to close her legs, but her son forcefully spread them apart.
He skillfully rubbed his mother’s clitoris, while his other hand was not idle either, rubbing her breasts vigorously.
Allison was overwhelmed by the pleasure, her whole body softened like a puddle of spring water.
“Mom, I can’t help it...”
Colin panted, eager to take off his pants.
But just as he was about to enter his mother’s body, Allison’s remaining sanity sounded the alarm.
“No ... This is incest ... I can’t go any lower!”
“No! Stop...”
Allison pushed her son away tremblingly, her vision blurred by tears.
“Mommy can’t ... Mommy can’t do this...”
Colin was stunned, with a hint of hurt in his eyes.
He took a deep breath, slowly let go of his mother, and tidied up his messy clothes.
“I’m sorry, Mom. I was too impatient.”
He apologized, “I will wait for you, until you truly accept me...”
After saying this, he kissed his mother’s forehead tenderly and turned away.
The moment the door closed, Allison collapsed to the ground, sobbing.
“What’s wrong with me? I actually developed desires for my son, and even wanted to give my body and soul to him ... What qualifications do I have to be his mother? However, there is a voice in my heart that keeps urging me. So what? You two really love each other ... Let him possess you, and belong to him completely ... Only in this way can you be happy...”
She covered her ears and shook her head desperately, trying to dispel the wild thoughts in her mind. But the lingering scene could not be shaken off. The touch of her son touching and kissing her just now was still vivid in her mind, causing her to shudder.
She curled up in bed in despair, not knowing how to face the sun tomorrow...
Colin returned to the room and punched the wall in frustration.
He thought the time had come, but his mother was still hesitating and struggling. No, he couldn’t rush it, or it would backfire ... Now his mother had wavered, and as long as he pushed harder, she would be willing to submit to him!
Colin quickly calmed down, a determined smile appeared on his lips. He picked up his phone, looked at the photo of his mother on the screen saver, and gently stroked her face.
“Mom, I’ll make you mine.”
He murmured to himself, “Then you will never be able to leave me, and you will never be able to reject me...”
He turned off his phone and fell asleep.
In the darkness, he seemed to hear his mother whispering in his ear: Son, take me ... Mom is yours...
In another room, Allison tossed and turned in bed, her mind filled with her son’s passionate gaze and touch. She despairingly discovered that her body and mind had been completely captured by this man and she could no longer escape...
The next morning, when Allison woke up, she found herself lying in Colin’s arms.
Her son had sneaked into her room at some point and hugged her tightly from behind. Her back was pressed against his strong chest, and her buttocks were pressed against his bulging lower body. The hot and hard touch made her heart beat wildly.
She struggled frantically, trying to get up, but Colin held her tighter.
“Mom, lie down for a while.”
He mumbled in a half-asleep state, his nose rubbing against the back of his mother’s neck, his breath warm and long.
Allison felt so ashamed and yet so aroused by the intimate posture that her entire body felt numb.
She didn’t dare to move, for fear of waking her son, and even more afraid of losing control and throwing herself into his arms. She could only blush and lie stiffly in his arms, feeling the rise and fall of his chest and the reaction of his lower body...
The mother and son slept in each other’s arms, like a real couple.
The day’s work passed in a daze. When Allison stood on the podium, she was always thinking about the relationship between herself and her son.
It was very late when she slowly walked back home.
She called Colin and started the final deep conversation.
“Son, I can no longer suppress my inner desire ... Mom also wants to be close to you and have more physical contact with you. But, we are mother and son after all ... If we really have sex, it will be incest and will be punished by God.”
“Mom can’t let you enter her body ... but maybe I can accept other things. We can kiss, caress, rub against each other, and even take a bath and sleep together ... As long as you swear that you will never penetrate her, I will be willing to be your woman.”
“Of course, this matter must not be known to any other person, especially your father and sister. We must love each other secretly and keep it in our hearts forever...”
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