Disclaimer: The sex in this part is very rough but consensual. If you have a problem with that, you should skip it and probably stop reading this story altogether. This is not feminist literature.
Summary of parts 1-3:
Angela, a genius tech CEO gets into a car accident and suffers a severe head injury, which leaves her a ditzy idiot.
Her son Adam, whose relationship with her has been cold and distant, takes a liking to his 'new' mom and becomes sexually obsessed with her.
His father John escapes the sexless marriage with a young nurse under false pretenses, leaving Adam and his mom alone.
Adam quickly puts a plan in motion to seduce his mom and transform her into his slut. Angela innocently helps by getting breast implants as a gift for Adam.
His scheme succeeds and he ends up fucking his mom hard, turning her into his slut.
Meanwhile at school, Adam has changed his personality which attracts Becky, the school slut, who is secretly a virgin. She become his submissive pet, giving him regular blowjobs and face fucks.
During a massive orgasm, Adam sees a glimpse of his 'old' mom come through and decides to investigate.
Angela changes her hair color to blonde and dresses up as a slutty schoolgirl for Adam.
He ties her to the bed and straps a remote controlled vibrator to her.
Other notable events:
Mrs. Hunt, a teacher, catches Becky and Adam in the act and demands to speak to his parents.
Doctor Kline wants to checkup on Angela's healing process.
Chapter 21 - The Exorcism of Angela
Adam was getting lightheaded. The super massive black hole of an erection had forced him to take off his pants. He was now standing fully nude in his parent's bedroom.
On the bed was his mom in pink fluffy handcuffs tied to the headboard by a rope. Her enormous boobs barely covered by a sheer white blouse, tied at the front. Hard nipples poking through the fabric.
Her abs were tensed as she tried to sit up, to get a better view at her son's towering cock. Angela's hips were accentuated by a red thong riding high at her waist line. A pair of fit thighs was clad in a very short, low rise, plaid skirt and fishnet stockings.
Angela's legs were spread, her ankles bound with rope to opposite corners of the bed. Adam had already ripped her fishnets and place the remote controlled vibrator inside her already soaking pussy.
"Baby...what is this about? I don't mind the rope but why can't you fuck your mommy slut for real? I want to feel your big cock stretching me out. Come on Adam, fill me up!" Angela pleaded with her son.
Adam stood firm. Ever since his mom had that flashback during sex, he was determined to investigate. Could he trigger an intelligence increase through an intense orgasm?
The risks were obvious and enormous. During her flashback, Angela did not protest. If his 'old' mom actually resurfaced completely, she would have likely ripped his dick off and fed it to him. What if he succeeded in triggering a flashback and his 'old' mom came back for good?
On the other hand, the flashback was very brief last time and 'new' mom's slutty personality seemed to linger.
No, no. He just had to know. What if his dick was just that good and at the moment of the flashback his 'old' mom had realised that she wanted to be his mommy slut?
The upside was too good to pass up. If everything went well, he could end up fucking his dumb ditzy 'new' mom whenever he wanted and have an actual relationship with his genius but finally attitude-adjusted 'old' mom.
He turned the vibrator to a medium setting and pressed the red button labelled 'GO'. Angela's pleading and begging immediately subsided and was replaced by a loud moan. She was already so wet, excited and sensitive that the vibrations sent waves of pleasure through her.
"Oooooh that feels good tooooo. Not as good as your cock though, big boy."
Angela let loose and enjoyed the ride, her legs straining against the rope.
Adam had tied her up mostly because he wanted a way to survive, should his 'old' mom want revenge.
"Frrrrr...Fuuuuaaa....Fuck...Adam honey please, you're teasing me! How can you say no to pumping me full of cum? I got all dressed up for-"
Adam turned the vibration up to high. Another jolt went through his mom. This time she was arching her back, her abs flexing as the pleasure washed over her. "Shit, that's a good spot." She groaned.
"Did you cum yet?" Adam asked.
"No baby, I am holding out for you. I want to cum on your meaty cock while you spurt your baby batter all the way up into my-"
Adam turned up the vibration to the highest possible setting 'jackhammer'. Angela thrashed against her restraints, her moans had increased in volume and pitch. The scene looked like some sort of porn parody of the exorcist. Angela as the possessed bimbo schoolgirl and Adam as the hunky priest.
He felt his knees get weak, the head of his dick was now purple, his balls hung heavier than ever as he watched the fit milf body of his mom writhe, flex and tense before him. He didn't know it before but seeing her tied up drove him wild. She was completely helpless as the vibrator relentlessly pleasured her pussy.
"Fucking cum already! Mom seriously, stop holding back!" Adam shouted.
"NNNNGGHH"
Angela still tried to resist the orgasm building up inside her. "Noooo, I guess you'll have to punish meeeee."
"What's 9+9?" Adam asked.
"69! Let's do 69. You can fuck my face like this morning." Angela replied.
"God damn it. Cum, you stupid slut, then I'll fuck you as a reward." Adam shouted.
Angela came. Her son insulting her pushed her over the edge. It started with her clit. Like a pinata bursting open and spilling candy on the ground, her orgasm rushed through her entire body. She had no control over any muscles. Her nipples tingled like someone pricked them with tiny needles full of heroin and her tits sprang free from their flimsy blouse. She wanted to curl up into a ball of pleasure and remain in that state forever.
Adam watched as his mom wrestled her right leg free from its restraints. Angela had held out the orgasm for too long and now her moaning shook the walls of their house. Suddenly, a feeling she felt once before appeared. It was like somebody unplugged a clogged pipe in her brain.
Adam turned the vibrator off.
"Wow, that was incredible." Angela said, out of breath, juice running down her thigh.
"Mo- Mom?" Adam asked sheepishly.
Angela's head was pounding. She clearly just had an amazing orgasm, better than John ever gave her so it must have been from a toy. She tried to reach for it but couldn't. She looked up and saw her wrists in pink fluffy handcuffs, tied to her bedpost. She looked down and saw a magnificent pair of pornstar tits that couldn't possibly be her own.
"What the fuck?"
