Prologue: If you haven't read chapters 1 and 2 of this story you may have trouble following the plot.
It was early evening and David Cashmore lay on his back on his mother's queen-sized bed; his mother, still fully clothed, straddled his naked body. She was performing fellatio on her son, slowly sliding her tongue along his shaft and then lapping at his pink glans, sucking the drops of pre-seminal fluid as they seeped from the eye of his cock.
She was in no hurry to bring her son to orgasm and she was enjoying teasing him this way; making him plead for release. She hadn't decided yet if she was going to fuck him or bring him off in her mouth; she was enjoying being astride her eighteen-year-old boy, head-to-toe, his head buried under her skirt, his tongue lazily flicking over her soaking wet panties, tracing the outline of her labia through the translucent nylon.
Neither of them was in rush; they had all night to explore each other. David had lain in wait for his mother to come home from work, nursing a painful erection but resisting the temptation to masturbate. As soon as his mother entered her bedroom David had thrown her on the bed and began to kiss and fondle her. She laughed and pretended to fight him off but she had been half-expecting him to do something like this. They hadn't had sex for a couple of days at her insistence because Michele Cashmore's sister had come to visit and she didn't want her sister to get even the slightest hint of what she and her son were up to.
A couple of times during the visit David had openly flirted with his mother when his Aunt wasn't in the same room; one time he had even slid his hand under her skirt and pawed at her sex.
"David! Stop it! You want me to go to jail and you to go into a boy's home?" Michele hissed at her son.
"I told you when we started this thing David; it would only work if we maintain total secrecy! No one must ever suspect!"
Subdued and a little dejected, David had behaved himself for the rest of his Auntie's visit. He had spent a lot of time locked in his bedroom masturbating into his mother's panties whilst looking at the secret videos he had taken of them having sex together. If his mother found out she would kill him; but he was intelligent enough to know that he could never show the videos to anyone else. Besides; he would never do that. Ever since he and his mom began fucking each other three months ago he had become very jealous of her.
He hated watching other men ogle his mother and he hated it even more when they tried to chat her up. At forty-eight Michele Cashmore was still an attractive woman with a buxom figure, great legs, and nice breasts.
And so the afternoon his Aunty left David had stripped and hid in his mother's wardrobe waiting for her to come home from work and he leapt on her as soon as she came through the door. Michele struggled with her son but she knew that he would want to take her while she was fully clothed. Her son loved to fuck her in her business suits and even when they slept together he insisted that she wear a bustiere or a corset or at least a garter belt and stockings. Her lingerie bills had gone through the roof since she started fucking her son!
She had managed to take off her suit coat but that is as far as she had been able to get undressed before her son had forced his head under her skirt and begun to slaver at her cunt. She was as sexually frustrated as he was and as soon as his wet tongue slid across her moist sex she had melted and stopped fighting him.
Michele had rolled her son over and straddled him in the classic sixty-nine position.
"If you rip my skirt or ladder my stockings David you'll get a good hiding!" she whined, exasperated by her son's impatience.
"Oh yes please Mommy," David chuckled, his muffled voice came from under her skirt.
"Of shut up and lick me," Michele sighed, and lowered her face to her son's throbbing cock.
Michele gently ran her fingertips along David's shaft admiring the contrast her ruby-red fingernails made against the pale skin of her son's penis; blue veins throbbed under the translucent flesh of his shaft. She loved David's cock! It was long, thick and proud. It was almost arrogant when erect and delicate and demure when flaccid. Which she had to say was not very often; at eighteen her son was at the peak of virility. Michele had never thought of penises as having personalities before; not that she had seen that many, but ever since she had started shagging David she had come to the conclusion that her son's dick had a certain quality and character.
That was another thing. She had never used words like cock, dick, cunt, tits, fuck, or shag before she started her incestuous tryst with her son. Now, when she was randy, which she seemed to be all the time recently, she liked to use those naughty words.
"Ooooooohhhhh!"
David had pulled aside the gusset of his mother's panties and his tongue was now lapping at her engorged clitoris. Michele lowered her mouth over David's trembling phallus and began to suck.
She would bring him to climax in her mouth; they could fuck later!
"Mom are you home? Are you upstairs?" a voice called from the stairway preceding the sound of heels climbing the treads.
"Fuck!!!" Michele spat out her son's cock just as he started to climax.
His semen spattered against her face and neck and gobs of it clung to her dark blue satin blouse.
Michele scrambled off her son and got to her feet in a panic; David was completing the job his mother had started using his hand.
"Get up you fucking lunatic! That's your fucking sister!" Michele hissed, scampering for the door.
"Jennifer! I'm just taking a shower! Make yourself a cup of tea and I'll be down in a minute!" Michele called out through the bedroom door.
As soon as she heard her daughter's footfalls descending the staircase she turned to her son.
"David; go to your room quickly! Don't come down for about half an hour or so ok?"
"What the fuck does she want?" David whined.
"David! Go to your room now!"
Michele didn't have time to deal with a petulant schoolboy. She had nearly been caught flagrante delicto with her son and her heart was racing. She pulled off her high-heels and kicked them towards the closet and hastily began to strip. David sat on the bed amused at his mother's turmoil; when she shucked out of her knickers David grabbed them off the bed.
"Souvenir!" he laughed.
"Get the fuck out of here you silly boy before we get caught!" Michele hissed and slapped David on the buttocks.
It was a little bit more than a playful slap and David realised that his mother was really angry. He went over to the door and opened it slightly and, seeing the coast was clear, silently padded down the hall to his bedroom. He put his mother's knickers in the drawer with the others he had commandeered and selected the crustiest pair out of his collection and took them with him to the bathroom. He tossed them into the laundry basket and climbed into the shower.
