Human Behavior Observation Experiment - Cover

Human Behavior Observation Experiment

Copyright© 2025 by danbaifen

Chapter 3

Incest Sex Story: Chapter 3 - 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  

Colin gently stroked his mother’s black hair, his fingertips lightly brushing across her white neck, causing her to tremble slightly.

Then, his hand slowly moved down, brushing across his mother’s beautifully shaped collarbone, and finally stopped at her full breasts. Through the thin sweater, he felt the soft elasticity of that mass. He couldn’t help but pinch it, and his mother immediately let out a soft gasp.

“S-sorry, Mom. I pushed too hard.”

Colin blushed and let go of her hand, but his eyes clearly showed reluctance.

“No ... nothing.”

Allison lowered her head, not daring to look at her son’s fiery gaze. She felt a sharp pain in her chest, as if her son’s handprint was still there. She knew that this small action had ignited her son’s desire.

And I am afraid it will be difficult for me to go back to the way I was before.

“Then I’ll continue.”

With his mother’s tacit consent, Colin’s hands began to wander freely on his mother’s body.

He first traced his mother’s slender waist through her clothes, then reached into her hem and lingered on her flat belly.

Allison bit her lower lip, trying to hold back the moan in her throat.

Her son’s warm palms wantonly ignited her most private parts. This kind of immoral pleasure made her feel extremely ashamed, but also inexplicably excited. She closed her eyes in despair, feeling her son’s hands all the way down, caressing her round and perky buttocks and slender legs.

“Mom, you have a really great figure. It’s a pity to hide such a beautiful curve under clothes.”

Colin exclaimed sincerely, his tone full of obsession.

Allison couldn’t hold it in any longer and choked out, “Enough, stop talking ... I’m your mother, you can’t say that...”

Colin chuckled and said, “I know. But mom, don’t you think the relationship between us has deteriorated a long time ago?”

Allison opened her eyes suddenly and looked at her son in horror: “You ... what are you talking about?! We are mother and son!”

“But how many mothers in the world would kiss their sons? How many mothers would let their sons touch their bodies at will?”

Colin pointed out sharply, his tone full of pride.

Allison was speechless, as if struck by lightning.

She suddenly realized that what her son said was absolutely right.

In just two days, the relationship between mother and son has become extremely ambiguous.

What’s even more terrifying is that deep down in her heart, she actually had a secret expectation for this forbidden intimacy.

Oh my God, is she still worthy of being a mother?

Allison covered her mouth in despair and looked at her son in disbelief.

“Mom, you don’t know how beautiful you are. I want to be your man so much. I am grateful to this evil app. If it weren’t for it, I wouldn’t have the chance to kiss you...”

Allison felt dizzy at her son’s explicit words.

She couldn’t believe that her relationship with her son had fallen to this point. In just a few days, under the pressure of this terrible app, she broke through her bottom line step by step and did all kinds of unbearable things.

Now, even his son has begun to covet him, who can he blame for all this?

Allison struggled to push Colin away, muttering: “No, this won’t work. I’m your mother, how can we...”

However, before she could finish, Colin hugged her in his arms and blocked her mouth.

The warm lips pressed tightly together, and the flexible tongue went straight in, stirring freely in Allison’s mouth. This kiss was completely different from yesterday, full of aggression and lust, as if he wanted to tear her apart and eat her up.

Allison struggled desperately, but was no match for her son’s brute strength and could only helplessly endure this overbearing kiss.

Colin let go of his mother’s lips and licked the corner of his mouth with satisfaction: “Mom, you know, this is the moment I’ve been dreaming of. Since junior high school, I’ve been fantasizing about your body, tossing and turning day and night. Now, we’ve come to this point, do you still want to deny it?”

Allison’s eyes widened in horror, her heart almost jumping out of her throat.

She could never have imagined that her son had such dirty thoughts towards her, and that it had lasted for so many years.

She simply couldn’t imagine that this seemingly well-behaved child actually had such a face behind the scenes.

However, Allison could not deny that her son’s kiss gave her a secret pleasure.

The feeling of being possessed by someone so forcefully made her whole body numb.

She knew it was wrong, but she couldn’t resist the throbbing in her heart. Oh my God, was she really going to be dragged into the abyss by her son?

Just when Allison was struggling with her conscience, there was a “ding dong” sound, and the evil APP started moving again.

Allison opened the interface tremblingly, and saw a new task written on it: put on sexy lingerie and perform a striptease for her son, and the reward is up to 50,000 points.

Allison gasped, completely stunned.

This APP is really going to kill her! Wearing sexy lingerie is fine, but dancing erotically? Isn’t that something only strippers do? But 50,000 points are enough to pay off her husband’s gambling debts.

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