Human Behavior Observation Experiment
Copyright© 2025 by danbaifen
Chapter 11
Incest Sex Story: Chapter 11 - 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
Allison stroked her son’s hair, holding back tears. She felt her son’s body trembling slightly, as if he was in great pain.
“Mom will find a way to help you get rid of this. Maybe ... we should see a psychologist. Many teenagers have this kind of trouble, and it’s not shameful. The key is to learn how to vent and control yourself...”
Colin raised his head suddenly and looked at his mother with fiery eyes.
“But mom, I really like you. Not the kind of love a son has for his mother, but ... the kind of love a man has for a woman...”
He trembled and took his mother’s hand, pressing it against his left chest.
“Can you feel it? My heartbeat. Every time I get close to you, it beats like crazy. I know it’s wrong, but I can’t help it...”
Allison was stunned, letting her son’s hot palms wrap around her. Her mind was in a mess, and she had no idea how to respond. This was her son, the flesh and blood she had raised for twenty-five years. How could he have such feelings for her? She should scold him, spit on him, but ... how could she bear to see her son struggling in pain?
“Mom, believe me, I really didn’t mean it...”
Colin choked up, tears blurring his eyes.
“I respect you, love you, and worship you like a god. But ... but it seems like there is another person living in my body, an evil and dirty bastard. He always whispers in my ear and asks me to do those dirty things. I really can’t control him, and I can’t control myself...”
Allison’s heart softened completely. She hugged her son’s strong body tightly and let her tears soak his hair.
“Silly child, mom knows you didn’t do it on purpose. You must be sick, suffering from some mental illness. Don’t be afraid, mom will take you to see a doctor, we will definitely get through this difficult time...”
The mother and son hugged each other and cried, drawing strength from each other’s body warmth.
Outside the window, the rising sun brings a ray of hope to this broken family...
When Allison thought everything was finally settled, the nightmarish notification tone rang again on her phone. She opened the mailbox with trembling hands, and her heart sank to the bottom with every line of text.
“Dear Allison, do you think this is the end? You are so naive~ Mother and son hugging and crying? What a touching scene! Unfortunately ... this is just the beginning~”
“Since mom loves her son so much, let’s do one more thing for him! Let him take off his pants, and then ... put his erect penis in your mouth. Yes, use your serious and dignified mouth to suck your son’s penis~ Remember to lick every drop of semen that flows out of the urethra~”
“This is your son’s wish! How can you refuse, mom? If you do it, maybe your son will be able to return to normal~ Come on, I will supervise the whole process~”
Allison fell to the ground in despair, the phone slipping from her hand. Why ... why torture her like this?
Oral sex ... that’s something only prostitutes do. How can I do this?
“Please ... I really can’t do it ... I’d rather die than not, please spare me!”
Allison knelt on the ground in despair, tears streaming down her face.
She clasped her hands together with trembling hands, and prayed devoutly, hoping that the mastermind behind the APP would have a change of heart and let her and her daughter go.
But soon, the app sent another message: “Allison, what are you hesitating about? Can you bear to see your daughter being abused? Be obedient and suck your son’s cock, and everything will be over. Don’t forget your current situation. If you want to save your reputation and your daughter, you must try your best to be obedient~”
Allison closed her eyes in despair, letting the tears flow freely. She took a deep breath and stumbled into the bathroom.
Ten minutes later, when Allison reappeared, Colin was stunned.
She was wrapped in a snow-white bath towel, her plump body was faintly visible, her long wet hair was scattered on her chest, and the water drops slid down her graceful collarbone into her deep cleavage.
She walked barefoot to her son and knelt down in shame.
Colin stared at his mother in amazement, his breathing suddenly becoming heavier. His eyes greedily scanned his mother’s seductive body, and the tent under his crotch grew higher and higher.
Allison lowered her head in shame and reached for her son’s zipper with shaking hands. Tears blurred her eyes and she could hardly look directly at her son’s swollen crotch.
“Mom, what are you doing...”
Colin panted heavily and let his mother unbutton his pants.
When she finally plucked up the courage and took out the thick and long penis, Colin moaned with pleasure.
Allison closed her eyes in shame and licked her lips subconsciously. Her son’s penis was naked in front of her, with veins bulging and crystal liquid oozing out of the urethra, indicating his thriving desire.
She held her son’s penis tremblingly and slowly lowered her head. She stretched out her tongue and licked the glans tentatively, then shrank back in shock. The taste of her son filled her mouth, and the smell of male hormones made her dizzy.
“Mom, take it in your mouth...”
Colin held the back of his mother’s head and impatiently pressed his cock against her lips.
Allison whimpered, closed her eyes, opened her mouth, and swallowed her son’s cockhead.
This is crazy ... She’s giving her son a blowjob...
Allison thought desperately, tears streaming down her face.
Colin held her head and moved his waist back and forth, pushing his cock deep into her throat.
Allison was almost gagging from being pushed, saliva flowed from the corners of her mouth, wetting the bath towel on her chest.
Colin’s scalp tingled with pleasure. He growled, grabbed his mother’s hair, and thrust madly into her mouth.
Allison whimpered as she was forced to suck her son’s penis. She licked the shaft clumsily with her tongue and was choked by the salty prostate fluid from time to time.
“Yes ... that’s it ... you are great mom...”
Colin narrowed his eyes, enjoying his mother’s immature oral skills.
His cock grew bigger and bigger in his mother’s mouth, and his urethra opened and closed, ready to go.
Allison realized something, opened her eyes wide in fear, and tried to withdraw. But Colin held her head, thrust violently for more than a dozen times, growled, and shot all the hot semen into her mother’s mouth.
Allison screamed and choked. The sticky semen choked into her trachea. She coughed desperately, and the white liquid flowed out from the corners of her mouth and nostrils, making her face look miserable. More semen splashed on her eyelashes, hair, and even on the half-open bath towel.
“Ahem ... ahem...”
Allison kept retching, tears and snot all over her face. She wiped with shaking hands, but the more she wiped, the more stains appeared. The towel was also torn off, revealing her breasts covered with kiss marks.
This pitiful look only made Colin more excited. He pulled up his mother’s powerless body, kissed her semen-stained red lips without saying anything, and invaded her mouth roughly.
Allison whimpered as she endured her son’s violent assault.
Son is tasting his own cum ... is he crazy?!