Human Behavior Observation Experiment
Copyright© 2025 by danbaifen
Chapter 16
Incest Sex Story: Chapter 16 - 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
On the way home, Allison couldn’t hold back and took the initiative to seduce her son.
As soon as she entered the house, Allison hugged her son affectionately.
Colin was also aroused by his mother and carried her to the bedroom.
Soon, all the clothes were taken off and they were naked.
Colin pressed on his mother and pressed his thick cock against her vagina.
Allison panted softly, wrapped her legs around her son’s waist, and swayed her snow-white breasts in front of him.
“Come in ... come in ... son ... Mom wants you...”
Allison glanced at him seductively and urged him in a soft voice.
Colin couldn’t bear it any longer, he thrust his waist forward and his cock broke into the door.
“ah...”
Allison screamed as her pussy was filled to the brim.
The thick and long penis galloped inside her body, bringing wave after wave of pleasure.
She was fucked to the point of ecstasy, and she was babbling nonsense: “Good son ... son ... Mom is yours alone ... fuck me to death...”
After a night of passion, she was once again brought to bliss by her son.
In the afterglow of the climax, Allison lay exhaustedly in her son’s arms, feeling the warmth flowing through her body.
Colin gently kissed away the sweat on his mother’s forehead and stroked her hair: “Mom, you will always be the most beautiful woman in my heart. I only love you in this life.”
Allison closed her eyes happily and slowly fell asleep in her son’s arms.
“Yes, even if all the men in the world are drooling over me, I am only willing to be Colin’s exclusive lover. This body has already been branded as my son, and no one can take it away...”
It was another spring morning, and Allison woke up from the warm embrace of her son Colin.
Ever since she had sex with her son, her life seemed to have opened the door to a new world.
Although deep down, the guilt of her immorality still torments her, I can’t go back to the way it was before.
Last night, Colin pestered his mother for it several times.
He is young and strong, and his physical strength is far greater than that of his mother.
Every time his huge cock entered his mother’s body, Allison couldn’t help but sink into bliss.
Allison was afraid that she would become addicted and would not be able to leave her son’s big cock.
She got up quietly, afraid to wake up Colin who was sleeping soundly.
But as soon as she moved, the pain in her lower body made her gasp.
Her son fucked her so hard last night that she could hardly close her legs. She blushed at the white spots on the sheets and quickly changed them.
Allison checked her phone and found that the photo Colin posted of her and Natalie Portman had gone viral on the Internet.
“More beautiful than Natalie Portman”
“Mature woman”
“I can”...
“These big tits ... these long legs ... it’s worth it to die if I fuck them once...”
“Whose dick is so happy...”
“Fuck, this is Miura Eriko’s enhanced version ... I’m bleeding...”
Those explicit comments made her feel embarrassed and annoyed, but also secretly proud.
Although she is nearly forty years old, she can still amaze everyone, which should be attributed to the nourishment of her son.
Just as he was thinking, Colin woke up.
He hugged his mother from behind, and his hairy stubble tickled her neck.
“Mom, are you reading those comments again? They don’t understand you as well as I do.”
Colin pouted, his big hands already reaching dishonestly into his mother’s pajamas.
Allison had no choice but to turn off her phone and let her son fondle her breasts.
“You know mom, she still comes to ask for it every day...”
She scolded him, but her body reacted honestly.
Since tasting the forbidden fruit, she has become more and more sensitive, and gets wet with just the slightest teasing.
Feeling his mother’s desire, Colin grinned and pulled off her panties.
The thick and hard cock pressed against the mother’s petals, rubbing them intimately.
Allison moaned in unbearable pain and raised her hips actively, wanting her son to enter.
Colin was not in a hurry to insert it, but instead poked it shallowly with the condom-covered glans.
His flexible tongue was not idle either, blowing hot air into his mother’s ears.
“Mom, do you know how many men out there are fantasizing about you? But they’re not even worthy of touching you...”
Allison was so aroused by her son that her pussy opened and closed in desire.
“Stop talking ... give it to me...”
Allison begged, tears welling up in her eyes.
“My mother, what do you want your son to give you? Please tell me clearly.”
Colin deliberately played dumb, shallowly inserted the tip of his penis into the glans, and then immediately pulled it out, driving his mother almost crazy.
“Please ... use your big cock to penetrate mommy hard...”
Allison no longer cared about her modesty and cried and said obscene words.
After getting a satisfactory answer, Colin spread his mother’s legs, thrust his waist forward, and fucked her hard.
The thick and long penis broke through the tight passage and went straight to the heart of the flower.
Allison screamed and arched her body, enduring the violent pounding of her son.
“Mom, you’re so wet and tight inside ... better than any other woman...”
Colin was thrusting hard and panting in his mother’s ear.
“My son loves me so much ... I am so happy...”
Thinking of this, Allison hugged her son tightly with excitement, and her pussy sucked even harder.
Colin was gasping for breath as his mother squeezed him, and the speed of thrusting became faster and faster.
“You’re squeezing so tightly, are you trying to drink your son’s semen? Hmm?”
“Yes ... cum for me ... feed mommy...”
Allison was babbling incoherently, wanting nothing more than for her son to release his energy inside of her.
“Then I’m going to take off the condom...”
“Take it off ... cum inside ... cum in me...”
Colin growled when he heard that, and instantly took off the condom, hugged his mother’s waist tightly, and poured his hot essence into the depths of his mother’s flower heart.
The hot stream made Allison scream and reach climax...
After finishing, Allison collapsed in her son’s arms, enjoying some sage time.
Colin gently kissed away the sweat on his mother’s forehead, his tone full of satisfaction: “Mom, no matter how much those men on the Internet covet you, some of them can only drool at you. You will always be mine...”
Allison nodded tiredly and slowly fell asleep in his arms.
“Yes, let those men fantasize about me in their dreams. In reality, this body that they covet can only be played with by my dear son...”
Ever since Allison’s photo with Natalie Portman unexpectedly went viral, her life has changed dramatically.
Colin persuaded his mother to register a live broadcast account, which soon attracted tens of millions of fans.
Allison dresses conservatively during her livestreams, usually in plain dresses or business suits, showing very little skin. But even so, the comment section is still filled with men drooling over her.
“So beautiful, a goddess is a goddess, her figure and temperament are amazing!”
“I can do it! I can do it too! Please show me my body!”
“I want to hold her down and fuck her hard until she cries...”
“I’ve already imagined countless positions, fuck!”
“I heard she is a teacher. I really want to fuck her to death...”
...
Faced with these explicit messages, Allison felt embarrassed and angry, and wanted to rush into the screen and scold them.
But on second thought, wasn’t she famous because of the fanatical admiration of these otakus? Without them, who would care about a mature woman in her fifties? Thinking of this, she resisted the urge to roll her eyes, maintained a perfect smile, and waved goodbye to her fans gracefully.
As soon as the video started playing, Colin hugged his mother from behind, his broad chest pressed against her back, his hot breath spraying on her neck. His hands wandered restlessly on his mother’s chest, and soon two big white rabbits popped out from her low-cut dress.
“Mom, those men who fantasize about you are crazy, right? You really enjoy it?”
The son spoke in a low voice with a hint of jealousy in his tone.
He pushed his mother onto the dressing table, pulled off her panties and tried to penetrate her.
“Stop it, this is a study room ... your sister is at home today ... what if she comes in?”
Allison tried to resist hastily, but her body was honestly feeling wet.
She was actually slightly excited by her son’s rude treatment of her.
“I’m fucking jealous when I hear those men fantasizing about you. I want you to know whose woman you are!”
Colin didn’t care about anything else and just held the thick cock and inserted it.
Because there was no foreplay, the sudden pain made Allison scream and she collapsed on the table, allowing her son to do whatever he wanted.
“Ahh ... be gentle ... you’re going to break my mom...”
Allison panted and begged for mercy, but her legs were honestly wrapped around her son’s waist.
Colin became ruthless and thrust harder and harder, his thick and long penis almost piercing his mother through.
Allison was so excited and aroused by her son’s sex that her body trembled and she spoke nonsense.
“Ohh ... so good ... Mom is yours alone ... fuck her however you want...”
She completely threw away her reserve and indulged herself in pleasure under her son.
She felt extremely excited and satisfied when she thought that millions of men were fantasizing about her in the live broadcast room, and only the man in front of her could fuck her into such a lewd state.
Colin growled and thrust deeply, shooting all of his hot semen into his mother’s body.
Allison was so limp after the climax that she didn’t even have the strength to close her legs.
The two plump labia were fucked until they were red and turned upside down, and the little hole that couldn’t close was oozing out white semen, and even the circle of wrinkles was flattened.
Allison stared at the ceiling absentmindedly, feeling the lingering aftertaste in her body.
“Mom, you are my goddess, no one else can covet you!”
Colin hugged his mother tenderly, his lips and teeth lingering on her neck and breasts.
Allison was about to respond when she heard footsteps outside the door.
“Oh no, your sister is here!”
Allison hastily pushed her son away and frantically sorted out the messy clothes.
But her body, which had just been fucked so hard, had no strength left. She tried to stand up, but her legs went weak and she fell back into her son’s arms.
Colin looked calm as he helped his mother sit on the chair and turned to open the door.
Allison quickly gathered her hair and smiled calmly at her daughter who came in. But she was nervous inside, afraid that she would notice something was wrong.
“Mom, why is your face so red? Did you stay up late to live stream again?”
Ella asked with concern.
Allison stammered as she made up a lie, and caught a glimpse of the triumphant smile on her son’s lips.
“This bastard is not nervous at all!”
Allison cursed inwardly, but put on a forced smile on the surface, and coaxed and deceived her daughter into leaving.
“Look at you, what if Ella finds out?”
After sending her daughter away, Allison glared at her son angrily.
The sticky feeling in her lower body reminded her of her previous absurdity, and she felt so ashamed that she felt embarrassed.
“What could she find out? At most, she would think you were too tired from live streaming.”
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